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November 26, 2014

November 26, 2014

Posted by **jessica** on Friday, May 3, 2013 at 9:08pm.

- college agebra -
**Reiny**, Friday, May 3, 2013 at 10:20pm(3x^2 - 2x - 1)(x^2 + x + 5)

= 3x^4 + 3x^3 + 15x^2 + -2x^3 - 2x^2 ..... etc

(you should have 9 terms in this line)

can you see what I am doing?

it is just an expanded version of the old FOIL concept

I am sure you can finish it

There will be all kinds of like terms, make sure to simplify.

compare your answer with

http://www.wolframalpha.com/input/?i=expand+%283x%5E2+-+2x+-+1%29%28x%5E2+%2B+x+%2B+5%29

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