**Difference of Squares** is factoring a binomial where two perfect squares are subtracted.
Formula: `a^2 - b^2 = (a - b)(a + b)`.
Ex: `x^2 - 25 = (x - 5)(x + 5)`.
Pro-Tip: Spot this pattern to factor & simplify expressions super fast!
#Algebra #Factoring #STEM #StudyNotes
