Factor the expression below.

x2 - 49

(x+7) (x-7)

Because: the difference of two squares.

(x+7) (x-7)

Step-by-step explanation:

These are perfect squares. Whenever you have perfect squares, you can take the square root of the constant. The constant is 49 in this case. The square root of 49 is + or - 7. Therefore, you get (x+7) and (x-7) as solutions. Factored form is (x+7) (x-7).