Factor Completely

Question

2x^3-40x^2-192x

I have a common factor of x so I rewrote the problem as

x(x^2-40x+192) then trying to use FOIL rewrote as

(x ) (x )

And that is where i'm stuck.

Answer 1

The last one shold be

(x ) (x )

Answer 2

You factored out the 2x incorrectly. You should end up with 2x(x^2-20x+96).

The expression in parentheses can be factored into
(x-12)(x-8).

Now put it all together.

Answer 3

AAAAAAAAAAAAAAAHHHHHHH...thanks..it's in the details.