Evaluate
\frac{x^{2}\left(x^{2}-1\right)}{x^{4}+2x^{3}+2x^{2}+10x+15}
Expand
\frac{x^{4}-x^{2}}{x^{4}+2x^{3}+2x^{2}+10x+15}
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\frac{x^{4}-x^{2}}{x^{4}+2x^{3}+2x^{2}+10x+15}
Combine 2x^{2} and -3x^{2} to get -x^{2}.
\frac{x^{4}-x^{2}}{x^{4}+2x^{3}+2x^{2}+10x+15}
Combine 2x^{2} and -3x^{2} to get -x^{2}.
Examples
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Limits
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