Evaluate
b\left(5b^{3}+4\right)
Factor
b\left(5b^{3}+4\right)
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5b^{3}b+4b
Divide 25b^{3} by 5 to get 5b^{3}.
5b^{4}+4b
To multiply powers of the same base, add their exponents. Add 3 and 1 to get 4.
b\left(5b^{2}b+4\right)
Factor out b. Polynomial 5b^{3}+4 is not factored since it does not have any rational roots.
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Limits
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