Factor
\left(4x-45\right)x^{2}
Evaluate
\left(4x-45\right)x^{2}
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x^{2}\left(4x-45\right)
Factor out x^{2}.
4x-45
Consider 4x+36-81. Multiply and combine like terms.
x^{2}\left(4x-45\right)
Rewrite the complete factored expression.
4x^{3}-45x^{2}
Combine 36x^{2} and -81x^{2} to get -45x^{2}.
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