Lessons

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Basic Operations
Adding the Same Number
Subtracting the Same Number
Dividing the Same Number to Each Side of an Equation, Solving for an Unknown
Squares and Square Roots
When to do What
Solving Equations When Several Terms and Procedures are Involved
Summary

Squares and Square Roots

An additional application of 'doing the same thing to each side of an equation' involves exponents. That application involves squares and square roots.

Suppose we had the equation X² = 36 . To find X , we could take the square root of each side and the left side would equal the right side of the equation.

So...