Question

Which expression is equivalent to

2x2 + 2x-4 ?
2x2 - 4x + 2
X+2
X-1
X+2
-2
X + 2
x-2

Answer 1

Answer:

2(x +2)(x-1)

Explanation

Answer 2

2 (x + 2) (x - 1)

Explanation:

Simplify the following:

2 x^2 + 2 x - 4

Factor 2 out of 2 x^2 + 2 x - 4:

2 (x^2 + x - 2)

The factors of -2 that sum to 1 are 2 and -1. So, x^2 + x - 2 = (x + 2) (x - 1):

Answer: 2 (x + 2) (x - 1)