# math problem-simplify

• Dec 6th 2008, 04:06 PM
ab27834
math problem-simplify
I can multiply this easily-but the problem says to simplify it. I have the answer and NO idea how to get there. Can someone help to simplify:

(3x^2-2x^2-7)(8x^2-8x+7)

• Dec 6th 2008, 05:48 PM
repcvt
Quote:

Originally Posted by ab27834
I can multiply this easily-but the problem says to simplify it. I have the answer and NO idea how to get there. Can someone help to simplify:

(3x^2-2x^2-7)(8x^2-8x+7)

Are U sure U didn't typed wrong?Maybe it is ((3x^2-2x-7)(8x^2-8x+7).
• Dec 6th 2008, 05:50 PM
chella182
It was meant to be \$\displaystyle (3x^3-2x^2-7)(2x^2-8x+7)\$ I think.
• Dec 6th 2008, 06:48 PM
Shyam
Quote:

Originally Posted by ab27834
I can multiply this easily-but the problem says to simplify it. I have the answer and NO idea how to get there. Can someone help to simplify:

(3x^2-2x^2-7)(8x^2-8x+7)

Are you sure you typed it right? Is it \$\displaystyle (3x^2-2x-7)(8x^2-8x+7)\$ or \$\displaystyle (3x^3-2x^2-7)(8x^2-8x+7)\;\;?\$

Is this \$\displaystyle (3x^2-2x^2-7)(8x^2-8x+7)\$ the right question in your book? If it is then

\$\displaystyle = (3x^2-2x^2-7)(8x^2-8x+7)\$

\$\displaystyle =(x^2-7)(8x^2-8x+7)\$

now finish it.