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## Algebra basics (ASL)

### Course: Algebra basics (ASL) > Unit 1

Lesson 4: Square roots (ASL)- Intro to square roots
- Square roots of perfect squares
- Square roots (ASL)
- Simplifying square roots
- Simplifying square roots of fractions
- Simplify square roots
- Simplifying square-root expressions: no variables
- Simplifying square roots (variables)
- Simplify square roots (variables)

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# Simplifying square roots

Roots are nice, but we prefer dealing with regular numbers as much as possible. So, for example, instead of √4 we prefer dealing with 2. What about roots that aren't equal to an integer, like √20? Still, we can write 20 as 4⋅5 and then use known properties to write √(4⋅5) as √4⋅√5, which is 2√5. We *simplified* √20. Created by Sal Khan.

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