Evaluate
\left(9-2x\right)^{3}
Expand
729-486x+108x^{2}-8x^{3}
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-8x^{3}+108x^{2}-486x+729
Use binomial theorem \left(a+b\right)^{3}=a^{3}+3a^{2}b+3ab^{2}+b^{3} to expand \left(-2x+9\right)^{3}.
-8x^{3}+108x^{2}-486x+729
Use binomial theorem \left(a+b\right)^{3}=a^{3}+3a^{2}b+3ab^{2}+b^{3} to expand \left(-2x+9\right)^{3}.
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