G

#### Guest

##### Guest

2x^3 + x^2 - 8x -4

Here is what I have done:

2x^3 + x^2 -8x-4 grouping into two groups

2x(x + 1) -8x (x-2)

(2x + 1) (x-2)

My book says the answer is (2x + 1) (x-2) (x+2)

What would you say I did wrong?????? I appreciate your help.