Evaluate
\left(13a^{2}-4\right)a^{3}
Factor
\left(13a^{2}-4\right)a^{3}
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13a^{5}-8a^{3}+4a^{3}
Combine 5a^{5} and 8a^{5} to get 13a^{5}.
13a^{5}-4a^{3}
Combine -8a^{3} and 4a^{3} to get -4a^{3}.
a^{3}\left(13a^{2}-4\right)
Factor out a^{3}. Polynomial 13a^{2}-4 is not factored since it does not have any rational roots.
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