Factor
\frac{ab\left(21-4a-32a^{6}\right)}{4}
Evaluate
\frac{ab\left(21-4a-32a^{6}\right)}{4}
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\frac{20ab-32a^{7}b+ab-4a^{2}b}{4}
Factor out \frac{1}{4}.
ab\left(21-4a-32a^{6}\right)
Consider 20ab-32a^{7}b+ab-4a^{2}b. Factor out ab.
\frac{ab\left(-32a^{6}-4a+21\right)}{4}
Rewrite the complete factored expression. Polynomial -32a^{6}-4a+21 is not factored since it does not have any rational roots.
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