Question

how do i factor the following expression x^2-36

Answer 1

Factor the following:
x^2 - 36
x^2 - 36 = x^2 - 6^2:
x^2 - 6^2
Factor the difference of two squares. x^2 - 6^2 = (x - 6) (x + 6):
Answer:  (x - 6) (x + 6)