Factor
3k\left(k-7\right)^{2}
Evaluate
3k\left(k-7\right)^{2}
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3\left(k^{3}-14k^{2}+49k\right)
Factor out 3.
k\left(k^{2}-14k+49\right)
Consider k^{3}-14k^{2}+49k. Factor out k.
\left(k-7\right)^{2}
Consider k^{2}-14k+49. Use the perfect square formula, a^{2}-2ab+b^{2}=\left(a-b\right)^{2}, where a=k and b=7.
3k\left(k-7\right)^{2}
Rewrite the complete factored expression.
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