Question

Which expression is equivalent to (2x + 4)2 − (2x2 + 6)?

A) 2x2 + 16x − 2
B) 2x2 + 16x + 10
C) 4x2 + 16x + 10
D) 4x2 + 16x − 2

Answer 1

2x^2+16x+10

Explanation:

(2x+4)^2-(2x^2+6)

(2x+4)(2x+4)-2x^2-6

4x^2+8x+8x+16-2x^2-6

4x^2-2x^2+16x+16-6

2x^2+16x+10