Evaluate
1280b^{7}-\frac{3}{4}
Factor
\frac{5120b^{7}-3}{4}
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1280b^{7}-\frac{3}{4}
Multiply 160 and 8 to get 1280.
\frac{5120b^{7}-3}{4}
Factor out \frac{1}{4}. Polynomial 5120b^{7}-3 is not factored since it does not have any rational roots.
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