Posted by sally on Wednesday, March 28, 2012 at 4:50pm.
(x^3+ 5x^2+4) - (x^3 - 3x^2 - 6x)
= x^3 + 5x^2 + 4 - x^3 + 3x^2 + 6x
= 8x^2 + 6x + 4
mmmhhh?
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