Need help reducing radical expressions without perfect square or cube roots? Take heart: this free math lesson will ensure that you know everything you need to know for that next big test. Examples include square roots, cube roots, and 4th roots. You'll also learn a technique ...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
In this video tutorial, viewers learn how to calculate the standard deviation of a data set. The standard deviation of a statistical population, a data set, or a probability distribution is the square root of its variance. To calculate the standard deviation, users will need t ...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
Whenever you simplify a square root or a cube root you are writing them in the simplest form. This video teaches a factoring method. The factoring method Involves factoring the numbers under the radical. If the problem is a square root look for pairs, and for cube roots look ...more
A 45 45 90 triangle is a special right triangle because you can use short cuts to find leg length and hypotenuse length. This video solves two problems involving leg length and hypotenuse length. Video: . Highlights of the video A 45-45-90 triangle is an isosceles triangle, w ...more
What Is Pythagorean Theorem? Pythagorean Theorem is an equation discovered by a man named Pythagoras. It can be used to determine whether or not a triangle is a right triangle and find missing lengths of a triangle. The equation is: Parts of a Triangle The hypotenuse is the ...more
Imagine two stakes in your backyard. Now draw an east-west, north-south coordinate system on your lawn. Measure the east-west distance between the stakes and also the north-south distance. Take the square root of the sum of the squares of the two measurements and, voilà, you e ...more
Solving long and extensively complicated equations in grade school was tough to do by hand. Keeping track of which part of the equation to solve first took time, training, and lots of bad grades. As soon as middle school began, our dependance on calculators grew and difficult ...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
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
There are many impressive features on a Samsung Galaxy Note 2, but just like any other smartphone on the market, the most used one is the camera. How many times did you take a picture today? Or admire all the selfies in your gallery? Or upload a video to Instagram, Vine, or Sn ...more
If you want to try out some of the new features in Android L, but can't run the developer preview on your Nexus—or simply don't want to—there's still hope. You don't actually need to be running Android L to try out some of the new improvements. We've already shown you how to ...more
The Galaxy S8 and S8+ are the first Samsung flagships to use virtual buttons, which means this is the first time we're seeing Samsung's design style applied to Android's software navigation bar. Even though the on-screen keys look fairly different from what other OEMs have put ...more
See how to apply exponent rules to simplify radicals or square roots with this free video math lesson from Internet pedagogical superstar Simon Khan. Looking for a primer on how to solve matrix problems using a TI-89 graphing calculator? See how it's done with this free video ...more
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.
This video walks you through the steps of solving quadratic equations by square roots. 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 ma ...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
Perhaps not as easy as using a calculator, but easy nevertheless! With mathematics, as with anything else, not everyone progresses at the same rate. Happily, in the age of Internet video tutorials, this isn't a problem. Those who progress quickly can go beyond what's being tau ...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
In this how to you will learn how to estimate square roots. You could use this in the real world if you are an engineer or if you are a video game designer. Here is a video to help you understand. Video: .
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
The worst can always happen. Even if you think you're absolutely prepared, you can somehow find yourself stranded in the middle of nowhere by yourself. It can happen. Without a map, without a compass, without a cell phone... without food and water. There are plenty of dange ...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
Square dancing, a fun American pastime! Learn square dance steps with this instructional animation. Fun fact about square dancing: 19 U.S. States deem it their official dance. Square dance is a folk dance with roots in Europe, eventually spreading to the states & becoming more ...more
Square dancing, a fun American pastime! Learn square dance steps with this instructional animation. Fun fact about square dancing: 19 U.S. States deem it their official dance. Square dance is a folk dance with roots in Europe, eventually spreading to the states & becoming more ...more
Niho Ryori demonstrates how to make tonjiru or butajiro, pork and vegetable miso soup. First, cut carrots into quartered slices. Do the same with a giant white radish. Repeat the technique with a potato and add them to water. Scrub a root under running water and peel off the s ...more
Square dancing, a fun American pastime! Learn square dance steps with this instructional animation. Fun fact about square dancing: 19 U.S. States deem it their official dance. Square dance is a folk dance with roots in Europe, eventually spreading to the states & becoming more ...more
Square dancing, a fun American pastime! Learn square dance steps with this instructional animation. Fun fact about square dancing: 19 U.S. States deem it their official dance. Square dance is a folk dance with roots in Europe, eventually spreading to the states & becoming more ...more
Square dancing, a fun American pastime! Learn square dance steps with this instructional animation. Fun fact about square dancing: 19 U.S. States deem it their official dance. Square dance is a folk dance with roots in Europe, eventually spreading to the states & becoming more ...more
Square dancing, a fun American pastime! Learn square dance steps with this instructional animation. Fun fact about square dancing: 19 U.S. States deem it their official dance. Square dance is a folk dance with roots in Europe, eventually spreading to the states & becoming more ...more
Square dancing, a fun American pastime! Learn square dance steps with this instructional animation. Fun fact about square dancing: 19 U.S. States deem it their official dance. Square dance is a folk dance with roots in Europe, eventually spreading to the states & becoming more ...more
Square dancing, a fun American pastime! Learn square dance steps with this instructional animation. Fun fact about square dancing: 19 U.S. States deem it their official dance. Square dance is a folk dance with roots in Europe, eventually spreading to the states & becoming more ...more
Square dancing, a fun American pastime! Learn square dance steps with this instructional animation. Fun fact about square dancing: 19 U.S. States deem it their official dance. Square dance is a folk dance with roots in Europe, eventually spreading to the states & becoming more ...more
Square dancing, a fun American pastime! Learn square dance steps with this instructional animation. Fun fact about square dancing: 19 U.S. States deem it their official dance. Square dance is a folk dance with roots in Europe, eventually spreading to the states & becoming more ...more
Square dancing, a fun American pastime! Learn square dance steps with this instructional animation. Fun fact about square dancing: 19 U.S. States deem it their official dance. Square dance is a folk dance with roots in Europe, eventually spreading to the states & becoming more ...more
Square dancing, a fun American pastime! Learn square dance steps with this instructional animation. Fun fact about square dancing: 19 U.S. States deem it their official dance. Square dance is a folk dance with roots in Europe, eventually spreading to the states & becoming more ...more
Square dancing, a fun American pastime! Learn square dance steps with this instructional animation. Fun fact about square dancing: 19 U.S. States deem it their official dance. Square dance is a folk dance with roots in Europe, eventually spreading to the states & becoming more ...more
Square dancing, a fun American pastime! Learn square dance steps with this instructional animation. Fun fact about square dancing: 19 U.S. States deem it their official dance. Square dance is a folk dance with roots in Europe, eventually spreading to the states & becoming more ...more
Square dancing, a fun American pastime! Learn square dance steps with this instructional animation. Fun fact about square dancing: 19 U.S. States deem it their official dance. Square dance is a folk dance with roots in Europe, eventually spreading to the states & becoming more ...more
Square dancing, a fun American pastime! Learn square dance steps with this instructional animation. Fun fact about square dancing: 19 U.S. States deem it their official dance. Square dance is a folk dance with roots in Europe, eventually spreading to the states & becoming more ...more
Square dancing, a fun American pastime! Learn square dance steps with this instructional animation. Fun fact about square dancing: 19 U.S. States deem it their official dance. Square dance is a folk dance with roots in Europe, eventually spreading to the states & becoming more ...more
Square dancing, a fun American pastime! Learn square dance steps with this instructional animation. Fun fact about square dancing: 19 U.S. States deem it their official dance. Square dance is a folk dance with roots in Europe, eventually spreading to the states & becoming more ...more
Square dancing, a fun American pastime! Learn square dance steps with this instructional animation. Fun fact about square dancing: 19 U.S. States deem it their official dance. Square dance is a folk dance with roots in Europe, eventually spreading to the states & becoming more ...more
Square dancing, a fun American pastime! Learn square dance steps with this instructional animation. Fun fact about square dancing: 19 U.S. States deem it their official dance. Square dance is a folk dance with roots in Europe, eventually spreading to the states & becoming more ...more
Assembling the wooden screen is simple, but be prepared to get grimy while rooting around the salvage yard for matching hinges. 1. Lay the shutters side by side on a worktable, and align their bottoms using a straightedge. (Shutter heights may vary, so be sure to use the bott ...more
Square dancing, a fun American pastime! Learn square dance steps with this instructional animation. Fun fact about square dancing: 19 U.S. States deem it their official dance. Square dance is a folk dance with roots in Europe, eventually spreading to the states & becoming more ...more
First off, don't be frustrated. YOU CAN DO IT! Contrary to the message in the image above, it's NOT over. It's just beginning. And when it comes to solving the New York Times crossword puzzle, the old cliche does apply: practice makes perfect. I've read quite a few books and ...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 video tutorial, viewers learn how to simplify expressions involving algebraic ratios. In some ways, simplifying algebraic radicals is easier than numeric radicals. When we are working with square roots, we need to find the highest even power of a variable to act as out ...more
Having problems with cubes. For some people, mathematics doesn't come easy, but there are tricks to solving certain problems, like squares and cubes. Check out this math video tutorial to learn how to get cubes in math with mysterious Vedic methods. This is a mysterious metho ...more
Weather - there's no escaping it! Mother Nature can be hard on asphalt: if you live in an area where there are extreme weather changes from season to season then your asphalt will eventually become damaged. As the ground freezes and thaws there is movement that flexes the asph ...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
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
Learn how to convert from scientific notation to standard form by watching the above math video. To change a number from scientific notation to standard form, move the decimal point to the left (if the exponent of ten is a negative number), or to the right (if the exponent is ...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
Hair Tinsel Is Taking the Fashion World by Storm! The glittery strands are showing up everywhere from the red carpets of Hollywood to the runways of New York. The thin colorful strands (also called hair shimmers or hair bling) are made from silk and are applied by tying them ...more
If you were to look on the roof of your local city bus, what would you find? A little bit of dirt, most likely, and a whole lot of space. Precisely the stuff you'd find in an empty container garden! Enter NYU graduate student Marco Castro Cosio's Bus Roots, a project which, th ...more
Spring Hill Nurseries shows viewers how to plant Chrysanthemums, or hardy mums, in this video. The mums should be planted in early spring. First, choose a place to plant. You should choose an area that has a lot of direct sunlight. You should also plant in an area that has goo ...more
For new landscapes people tend to generally plant the new 'purple leaf plum' trees in a square shaped small plots. They also plant some small plants around it to make it look good. However when the tree grows older it needs to spread its roots. At that time these plants may tr ...more