Evaluate
x^{9}-x^{7}+x
Factor
x\left(x^{8}-x^{6}+1\right)
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x-x^{7}+x^{9}
Combine -x^{3} and x^{3} to get 0.
x\left(1-x^{2}+x^{2}-x^{6}+x^{8}\right)
Factor out x. Polynomial x^{8}-x^{6}+1 is not factored since it does not have any rational roots.
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