Tuesday
July 22, 2014

Homework Help: Math

Posted by Melissa on Sunday, October 2, 2011 at 2:24am.

Expand and simplify

1.(9a-3)^2

2.(x^2+2x-1)^2

3. 2(3a+4)(a-6)-(3-a)^2+4(5-a)

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