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August 30, 2015

Homework Help: math

Posted by raluca on Thursday, October 27, 2011 at 8:26pm.

simplify:

7y-3y-x^2+4x^2

how do i add x^2 to 4x^2?
what will the result be?

i know that 2x^2-x^2 = x^2....but not how to do the above

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