Algebra basics (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)
Square roots of perfect squares
Learn how to find the square root of perfect squares like 25, 36, and 81.
Let's start by taking a look at an example evaluating the square root of :
Step 1: Ask, "What number squared equals ?"
Step 2: Notice that squared equals .
Here's a question to make sure you understood:
How can we be sure that is the right answer?
Connection to a square
Finding the square root of is the same as finding the side length of a square with an area of .
A square with an area of has a side length of .
Practice Set 1:
Which claim shows how square roots work?
Practice Set 2:
Practice Set 3:
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