Evaluate
\left(24-x\right)^{3}+x
Expand
13824-1727x+72x^{2}-x^{3}
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x+13824-1728x+72x^{2}-x^{3}
Use binomial theorem \left(a-b\right)^{3}=a^{3}-3a^{2}b+3ab^{2}-b^{3} to expand \left(24-x\right)^{3}.
-1727x+13824+72x^{2}-x^{3}
Combine x and -1728x to get -1727x.
x+13824-1728x+72x^{2}-x^{3}
Use binomial theorem \left(a-b\right)^{3}=a^{3}-3a^{2}b+3ab^{2}-b^{3} to expand \left(24-x\right)^{3}.
-1727x+13824+72x^{2}-x^{3}
Combine x and -1728x to get -1727x.
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