Question

the product of (2x+7) and (2x -7) is

Answer 1

Step-by-step explanation:

(a + b) (a - b) = a^2 - b^2

(2x + 7) (2x - 7) = (2x)^2 - (7)^2

= 4x^2 - 49

Answer 2

By using the identity (a+b)(a-b) = a^2-b^2
Where a=2x and b=7
(2x+7)(2x-7)=4x^2-49