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OpenStudy (anonymous):
Simplify: (x - 4)2
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OpenStudy (uri):
2x-8.
OpenStudy (goldphenoix):
\[\large \large (x-4)^2 = (x-4)(x-4)\] Do you know how to do the FOIL method?
OpenStudy (anonymous):
Is this correct? x2 - 8x + 16 @GoldPhenoix
OpenStudy (goldphenoix):
Yes. Good job. :)
OpenStudy (anonymous):
Can you help me with this one too? (3x + 12) (3x - 12) I'm kind of confused. @GoldPhenoix
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OpenStudy (goldphenoix):
What did you get?
OpenStudy (anonymous):
9x^2 + 36x - 144. I know it's wrong but I don't see how you can get a different answer... @GoldPhenoix
OpenStudy (goldphenoix):
|dw:1374167515322:dw|
OpenStudy (anonymous):
So then it would just be 9x^2 - 144? @GoldPhenoix
OpenStudy (goldphenoix):
Yes.
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