Factor+Difference+of+Perfect+Squares

=**Factoring Differences of Perfect Squares**= By Christian Lee & Gregory Almeida

__How to factor difference of perfect squares.__

Ex: a^2+b^2=(a-b)(a+b)
 * 1) 1. Find formula
 * 1) 2. Substitute the equation to the formula
 * 2) 3. Solve!