Multiplying two whole numbers together is pretty easy, it's multiplying all the other types of numbers out there where it gets tricky. Watch this video for quick instructions on how to multiply fractions, exponents, polynomials, signed numbers, and square roots.
A square root of a number is a value which when multiplied to it self gives you the original number. The square roots of perfect squares are whole numbers. Like square root of 9 is 3, because 3 times 3 is 9. Similarly square root of 81 is 9 because 9 times 9 is 81. Others numb ...more
Solving a Dilemma This is a simple how-to for a cost effective drip irrigation system for your garden. My motivation to set up my garden for drip irrigation was pretty simple. In the summer, it gets to 90+ degrees outside, and my 50’ garden hose didn’t reach the far extents w ...more
In this algebra video the instructor shows how to work with complex numbers. When you have a positive number under the square root, you can easily find its value by writing it in the form of product of numbers, and then solving. That is, to find the square root of a positive n ...more
In this video the instructor shows how to simplify radicals. A radical is nothing but another name for a square root. To find the square root of a simple number the first thing that you need to do is factor it. If you need to compute the square root of a number, you first need ...more
In this video the instructor explains the concepts of rational and irrational numbers. Multiplying a number by itself gives the value of its square. If you apply the square root to that squared number it returns to you the original number. This square root is also called a rad ...more
This video teaches us the concept of nth roots. The video starts with the square root of constants. We find the number which when multiplies by itself for two times results in the constant inside the square root. Then we find the square root of variables. Here again the same c ...more
This is the video about how to evaluate square roots. The square root of a number is a number that you can square to get it, that is, a number that you can multiply by itself to get the number. So, 2 is a square root of 4, because 2 x 2 = 4, and 3 is a square root of 9, becaus ...more
Watch the following video to understand the steps necessary when simplifying square roots. To simplify expressions with radicals, follow these simple steps: • Write the radicand (the number underneath the radical sign) as a product of prime numbers. For larger numbers you ca ...more
Pythagoras was a smart man, so smart that his mathematical theory is named after him and still used today, more than 2,000 years later: the Pythagorean theorem. It implies that the square of the hypotenuse of a right triangle is equal to the sum of the squares of the other two ...more
In this video the instructor shows how to find out the fourth roots of a number. The properties of fourth root says that for any positive number of a, its fourth roots are real. And for any negative value a, its fourth roots are not real. So split the number inside the fourth ...more
In this lesson we will learn about one of the most important concepts in algebra SQUARE ROOTS. The square root of a number m is another number n that satisfies the following formula: m = n x n. You can also say that m is the square of n. The opposite of squaring a number is f ...more
This video shows the method to change a word problem into algebra and to identify rational numbers among a group of numbers. In the first part of the video we take a word problem namely - The product of 9 and seven, less than a number. 9 multiplied by something can be expresse ...more
In this tutorial, we learn how to rationalize square roots. You cannot have square roots in the denominator of an equation. You need to multiply so the square root goes away. You can do this by multiplying the top and bottom of the equation by the bottom denominator. From here ...more
In this video, we learn how to rationalize a denominator that contains a surd. First, you need to rationalize the denominator by removing any square root sign. To do this, you will multiply the fraction but the flip of the denominator over itself, with the square root. Then, y ...more
On Yay Math, Robert Ahdoot, founder of Yay Math, will show you some square root functions and some inequalities. He begins with the problem y=x². Then he makes a sketch with two intersecting lines in a t shape. The problem is illustrated by a curved U shape, the U's bottom res ...more
This video shows the method to find the variance and standard deviation using Excel. The variance shows the variability of the data points from the median. We find the difference of the median and the mean. We write the formula using '=' sign. The median and data points are pu ...more
Thanks to the advent of smartphones and mobile apps, Scrabble has spread like wildfire across the globe, whether it be Scrabble or one of its many popular word game spinoffs, such as Words with Friends, WordWise and Kalimat. There have been over one million Scrabble sets sold ...more
Last week's challenge brought up a good question (thanks Lisa) regarding the functionality of the Official Scrabble Players Dictionary, 4th Edition, both online and in print form. The word TACTICAL was the answer to the first puzzle in that challenge, but when you search for t ...more
It doesn’t matter how long ago your last geometry class was, you can still impress your friends by finding a geometric mean. The geometric mean can be used to find the average of numbers with out unusually high or low results effecting the result. The geometric mean of two nu ...more
What Is a Square Root and a Radicand? A square root is a number that when multiplied by itself, results in its original number. For example, the square root of 16 is 4 because 4 • 4 = 16. A radicand is the value that you want to find the root of. For example, 16 is the radic ...more
After you unlock the bootloader, install TWRP custom recovery, and flash Magisk to gain root access, what might be the next step of your modding adventure? A custom kernel, of course! Flashing a custom kernel onto your device gives you a whole new level of tweaks and customiza ...more
In the case of Apple Watch v. Fitbit, the winner comes down to the judge at hand. Apple currently offers two smartwatches — the Series 5 and the Series 3 — while Fitbit offers three models — the Fitbit Versa 2, Fitbit Ionic, and Fitbit Versa Lite. Whatever your assumptions abo ...more
When we are building programs that communicate over a network, how can we keep our data private? The last thing we want is some other lousy hacker sniffing our packets, so how do we stop them? The easy answer: encryption. However, this is a very wide-ranging answer. Today we'r ...more
Between the Cambridge Analytica scandal and the revelation that Facebook logs your calls and text history on Android, many are considering joining the #DeleteFacebook movement. But it can be difficult to leave the site, because so much of its content is only available to activ ...more
For many, phones are starting to replace televisions as the primary device for watching videos. Thanks to their portability and easy to use apps, it's often simpler to watch Netflix, Hulu, YouTube, or Prime Instant Video on the smaller screen. But not every phone is suited to ...more
The launch of Android 4.1 Jelly Bean was also the launch of Google Now, a service that was supposed to one-up Siri, the resident personal assistant for iOS devices. Google Now offered enticing features, but its launch went unnoticed by a great many Android users. But that was ...more
You might think you need to buy a thousand dollar phone to get a great experience while streaming movies and TV shows from services like Netflix, Hulu, and YouTube, but that's just not true anymore. While phone prices keep rising and the midrange segment now ranges from $300–$ ...more
Year in and year out, OnePlus flagships top our list of the best phones for rooting. Why? Primarily because rooting does not void your warranty, and OnePlus goes out of their way to make the whole process as easy as possible. If you're new to rooting, it might seem like more ...more
The Calculator app is probably one of Apple's most-used iPhone apps, yet I always meet people who don't know all the little tricks there are to using it more efficiently. You may know most of them, but there's a chance you don't or at least forget about some of them. What a " ...more
If we were to assign a theme for the 2019 edition of the Next Reality 30 (NR30), it might be something along the lines of, "What have you done for me lately?" Many of the top names in the industry from the 2018 edition remain the same, but their positions have shuffled. The p ...more
If you have ever wanted to mod your Android device, your new best friend is easily going to be Team Win's TWRP custom recovery. This gives you access to file flashing on the fly, which can include such things as Magisk for root access, or even a custom ROM to replace the stock ...more
The one thing that separates a script kiddy from a legitimate hacker or security professional is the ability to program. Script kiddies use other people's tools, while hackers and security pros write their own tools. To that end, we're going to see how a stack overflow vulnera ...more
My first encounter with a phablet was late last year with the AT&T version of the Samsung Galaxy Note 2, having never touched or even seen its highly-acclaimed and pioneering predecessor. Initially, I was a bit overwhelmed by the enormous screen and taken aback by the dated st ...more
Need a little help with your math homework? No problem, the Math Centre offers students video tutorials that will provide as a reference guide for self-study. Students get self-study resources targeted to the needs of individual courses, and teachers gain generic mathematics s ...more
This video shows us how to multiply mixed numbers with the whole numbers. First thing you need to do is to change the mixed number into an improper fraction by multiplying the denominator with the whole number and add the resulting number with the numerator. The resulting numb ...more
In this math lesson, you will learn how to find the square root of a number without using a calculator. You can even find the square roots of large numbers by following this simple algorithm. The above video demonstrates how to find the square root by hand. Sometimes you migh ...more
From Ramanujan to calculus co-creator Gottfried Leibniz, many of the world's best and brightest mathematical minds have belonged to autodidacts. And, thanks to the Internet, it's easier than ever to follow in their footsteps. With this installment from Internet pedagogical sup ...more
This video walks you through the steps of solving square roots and real numbers. This excellent video shows you a clean blackboard, with the instructors voice showing exactly what to do. Don't fret, any question you may have, will be answered. Watching this video will make you ...more
Thanks to online music services like eMusic and iTunes, compact discs are becoming a far distant memory, turning local music shops around the country into desolate wastelands. The once mighty movie rental store Blockbuster is now bankrupt because of online streaming services l ...more
Solving 6 math problems using different methods is the idea behind this video. First, you make three rows of numbers vertically from 1-9. All the numbers match across for example, 1 1 1, 2 2 2, 3 3 3, and so on. Each set of numbers creates a mathematical problem who's solution ...more
Learn how to work with i, the imaginary square root of negative 1, in intermediate algebra. From Ramanujan to calculus co-creator Gottfried Leibniz, many of the world's best and brightest mathematical minds have belonged to autodidacts. And, thanks to the Internet, it's easier ...more
This video tells us the method to find the surface area of an aluminium can or cylinder. The surface area includes the outside area of the curved portion and the aluminium top and bottom. The formula to find area is the multiple of 2, pi, r, r+h or (2)(pi)(r)(r+h). The radius ...more
Since its launch in 2001, Wikipedia has become the number one reference site on the web, used by anyone and everyone, written by anyone and everyone. With over 18 million collaboratively written articles, there's backgrounds and descriptions on practically everything—if it exi ...more
I am writing this quick post in response to the recent earthquakes and tsunamis that are affecting Japan. As soon as the news broke, and we began to hear of tsunami warning for our area, I immediately realized how under prepared I was for a natural disaster. The thing that dro ...more
Math is one of those subjects in school where you either love it or hate it or just don't get it. But math is nothing to fear, because it's a part of our everyday lives, and ifs something everyone should know the basics of. Don’t let math intimidate you. Whether you’re multipl ...more
When you need to compute the square root of a number you can do it by breaking it into perfect squares. When you can split the given number into small perfect squares you can cancel out the square root of the expression to the square of the perfect squares. You cannot always w ...more
For example consider 1 and 2/3. In this mixed fraction 1 is the whole number and 2/3 is the fraction. You simply have to multiply the denominator with the whole number and add the numerator to the resulting answer. Consider the fraction 1 and 2/3.All you have to do is multiply ...more
This is a video tutorial on how to simplify square roots. To simplify square roots, one must have the knowledge of splitting numbers into prime factors. For example,12 can be split into 4*3 and further more into 2*2*3. Here we see that all the factors are prime numbers. So the ...more
In this video you can learn how to simplify complex fractions. Look at the example in the illustration. To simplify this complex problem, you would first add the number 1 under the whole number in the denominator, to make it a fraction. Then change it from a division problem b ...more
A complex number is half real (a) and half imaginary (bi), just like that Edward Cullen who makes your heart thump realistically but whose sparkly chest makes you wonder if he's something more. Explore the land of glittery vampires and fake boys by learning how to rewrite rad ...more
In this tutorial, we learn how to multiply & divide fractions & mixed numbers. When multiplying and dividing fractions you don't need a common number, you just multiply straight across. When dividing, you simply flip the second fraction over and multiply straight across like n ...more
Looking to find the standard deviation of your set of values? Standard deviation quantifies how diverse the values of your data set are, and is useful in determining how different your numbers are from each other. You Will Need: • Data • A calculator Step 1: Collect your d ...more
In this video, the narrator presents the viewer with a quick, painless way of simplifying cube roots. The narrator presents many methods to simplify square roots to appeal to different learning styles. By doing things like dividing the power by the root to figure out the power ...more
This video teaches you to subtract mixed numbers with borrowing. Consider 2 mixed numbers. For example 8 and 2/7 and the other 5 and 4/5.You have to subtract 5 and 4/5 from 8 and 2/7. First you have to convert the fractions to their common denominator. To equate the denominato ...more
This video shows how to find the area of a circle using a formula. The formula for area of circle is pie multiplied by square of radius. Pie is actually an infinite number but for the sake of convenience we consider the value of pie as 3.14. So we multiply the square of radius ...more
In this Math tutorial, you will learn how to convert a mixed number into an improper fraction. The narrator explains the process in a very concise yet simple manner that will make math problems involving mixed numbers so much easier to solve. The general idea is to multiply th ...more
Exponent of a number is nothing but the number multiplied to it self the exponent number of times. So five squared it equal to five multiplied to it self. Now when an exponential number is divided with another such number the result is the number raised to the different of the ...more
In this video tutorial, viewers learn how to simplify expressions involving numeric radicals. This can be very frustrating to work with if you have not memorized the tables of square, cubes and fourths. If you are taking the square root of a number that is not a perfect square ...more
The video demonstrates the solving of radical equations in algebra. The first thing to be done is to keep the radical number on one side and the other numbers on the other side. The radical is then changed to a rational number by squaring, cubing etc. Once the roots are remove ...more