In this unit, we review exponent rules and learn about higher-order roots like the cube root (or 3rd root). We'll learn how to calculate these roots and simplify algebraic expressions with radicals.

And now that we know a little bit about exponents, we'll see that the square root symbol or the root symbol or the radical is not so hard to understand. So, let's start with an example.

This topic covers: - Solving radical equations - Graphing radical functions

Simplifying square roots (variables) Simplifying square-root expressions Simplifying square roots review Exponents & radicals: FAQ Practice Quiz 3 Level up on the above skills and collect up to 240 …

A worked example of simplifying an expression that is a sum of several radicals. In this example, we simplify √ (2x²)+4√8+3√ (2x²)+√8. Created by Sal Khan and Monterey Institute for Technology and …

This unit is all about expanding our skills with exponents and radicals (roots). We'll explore square and cube roots, learn about irrational numbers, and push ourselves to understand exponents with …

Rational vs. irrational expressions Learn Intro to rational & irrational numbers Classifying numbers: rational & irrational Proof: sum & product of two rationals is rational Proof: product of rational & …

To find the square root of a number x , we look for a number whose square is x . For example, since 3 2 = 9 , we say that the square root of 9 , written as 9 , is 3 .

I'm having problems knowing when and where to simplify radical equations. I think I need a refresher, I am re-taking a math class so I am a little rusty. Basically, I turned 2 / ( √5 - 1 ) into ( 2√5 + 2 ) / 4, and …

It's not like we can factor it out as a factor of some other numbers and some perfect squares like we did here. 117 is 13 times 9. It's the product of a perfect square and 13. 26 isn't, so we've simplified this …