Factor
2\left(21u^{3}+1\right)u^{6}
Evaluate
42u^{9}+2u^{6}
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2\left(21u^{9}+u^{6}\right)
Factor out 2.
u^{6}\left(21u^{3}+1\right)
Consider 21u^{9}+u^{6}. Factor out u^{6}.
2u^{6}\left(21u^{3}+1\right)
Rewrite the complete factored expression. Polynomial 21u^{3}+1 is not factored since it does not have any rational roots.
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