SOLUTION: There are several problems in today's homework I can't get. I need to factor each differnence of two squares. Here's one: x2-4

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: There are several problems in today's homework I can't get. I need to factor each differnence of two squares. Here's one: x2-4      Log On


   

Question 39119This question is from textbook
: There are several problems in today's homework I can't get. I need to factor each differnence of two squares. Here's one: x2-4 This question is from textbook

Answer by fractalier(6550) About Me  (Show Source):
You can put this solution on YOUR website!
x^2 - 4 = (x + 2)(x - 2)
It's always
a^2 - b^2 = (a + b)(a - b)