Integrand size = 38, antiderivative size = 59 \[ \int \frac {x \sqrt [3]{2-x^3+x^8} \left (-6+5 x^8\right )}{4+x^6+4 x^8+x^{16}} \, dx=\frac {1}{2} \text {RootSum}\left [2+2 \text {$\#$1}^3+\text {$\#$1}^6\&,\frac {-\log (x) \text {$\#$1}+\log \left (\sqrt [3]{2-x^3+x^8}-x \text {$\#$1}\right ) \text {$\#$1}}{1+\text {$\#$1}^3}\&\right ] \]
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\[ \int \frac {x \sqrt [3]{2-x^3+x^8} \left (-6+5 x^8\right )}{4+x^6+4 x^8+x^{16}} \, dx=\int \frac {x \sqrt [3]{2-x^3+x^8} \left (-6+5 x^8\right )}{4+x^6+4 x^8+x^{16}} \, dx \]
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Rubi steps \begin{align*} \text {integral}& = \int \left (-\frac {6 x \sqrt [3]{2-x^3+x^8}}{4+x^6+4 x^8+x^{16}}+\frac {5 x^9 \sqrt [3]{2-x^3+x^8}}{4+x^6+4 x^8+x^{16}}\right ) \, dx \\ & = 5 \int \frac {x^9 \sqrt [3]{2-x^3+x^8}}{4+x^6+4 x^8+x^{16}} \, dx-6 \int \frac {x \sqrt [3]{2-x^3+x^8}}{4+x^6+4 x^8+x^{16}} \, dx \\ \end{align*}
Time = 1.39 (sec) , antiderivative size = 59, normalized size of antiderivative = 1.00 \[ \int \frac {x \sqrt [3]{2-x^3+x^8} \left (-6+5 x^8\right )}{4+x^6+4 x^8+x^{16}} \, dx=\frac {1}{2} \text {RootSum}\left [2+2 \text {$\#$1}^3+\text {$\#$1}^6\&,\frac {-\log (x) \text {$\#$1}+\log \left (\sqrt [3]{2-x^3+x^8}-x \text {$\#$1}\right ) \text {$\#$1}}{1+\text {$\#$1}^3}\&\right ] \]
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Timed out.
\[\int \frac {x \left (x^{8}-x^{3}+2\right )^{\frac {1}{3}} \left (5 x^{8}-6\right )}{x^{16}+4 x^{8}+x^{6}+4}d x\]
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Exception generated. \[ \int \frac {x \sqrt [3]{2-x^3+x^8} \left (-6+5 x^8\right )}{4+x^6+4 x^8+x^{16}} \, dx=\text {Exception raised: TypeError} \]
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Not integrable
Time = 4.48 (sec) , antiderivative size = 34, normalized size of antiderivative = 0.58 \[ \int \frac {x \sqrt [3]{2-x^3+x^8} \left (-6+5 x^8\right )}{4+x^6+4 x^8+x^{16}} \, dx=\int \frac {x \left (5 x^{8} - 6\right ) \sqrt [3]{x^{8} - x^{3} + 2}}{x^{16} + 4 x^{8} + x^{6} + 4}\, dx \]
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Not integrable
Time = 0.23 (sec) , antiderivative size = 38, normalized size of antiderivative = 0.64 \[ \int \frac {x \sqrt [3]{2-x^3+x^8} \left (-6+5 x^8\right )}{4+x^6+4 x^8+x^{16}} \, dx=\int { \frac {{\left (5 \, x^{8} - 6\right )} {\left (x^{8} - x^{3} + 2\right )}^{\frac {1}{3}} x}{x^{16} + 4 \, x^{8} + x^{6} + 4} \,d x } \]
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Not integrable
Time = 0.30 (sec) , antiderivative size = 38, normalized size of antiderivative = 0.64 \[ \int \frac {x \sqrt [3]{2-x^3+x^8} \left (-6+5 x^8\right )}{4+x^6+4 x^8+x^{16}} \, dx=\int { \frac {{\left (5 \, x^{8} - 6\right )} {\left (x^{8} - x^{3} + 2\right )}^{\frac {1}{3}} x}{x^{16} + 4 \, x^{8} + x^{6} + 4} \,d x } \]
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Not integrable
Time = 5.68 (sec) , antiderivative size = 38, normalized size of antiderivative = 0.64 \[ \int \frac {x \sqrt [3]{2-x^3+x^8} \left (-6+5 x^8\right )}{4+x^6+4 x^8+x^{16}} \, dx=\int \frac {x\,\left (5\,x^8-6\right )\,{\left (x^8-x^3+2\right )}^{1/3}}{x^{16}+4\,x^8+x^6+4} \,d x \]
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