Question

Multiply
(2m + 7) (2m – 7)

Answer 1

4m^2 -49

Explanation:

(2m + 7) (2m – 7)

FOIL

first 2m*2m = 4m^2

outer 2m *-7 = -14m

inner 7 *2m = 14m

last 7*-7 = -49

Add them together

4m^2 -14m+14m -49

Combine like terms

4m^2 -49