Posted by sean on Saturday, July 3, 2010 at 6:01am.
X^2 +3/X- 2X^2 +5/X. Common Denominator
=X: (X^3+3)/X -(2X^3+5)/X=
(X^3+3)/X+(-2X^3-5)/X=(-X^3-2)/X=
-X^3/X-2/X=-X^2-2/X
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