Homework Help: Math-Factoring 2

Posted by marco on Friday, April 16, 2010 at 12:26pm.

Factor Completely

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.

Math-Factoring 2 - marco, Friday, April 16, 2010 at 12:34pm
The last one shold be

(x ) (x )
Math-Factoring 2 - drwls, Friday, April 16, 2010 at 12:53pm
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.
Math-Factoring 2 - marco, Friday, April 16, 2010 at 12:55pm
AAAAAAAAAAAAAAAHHHHHHH...thanks..it's in the details.

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