Is the expression 125x^3 + 216 a sum of cubes?

asked Oct 26, 2020 38.5k views

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$\bf 125x^3+216~~ \begin{cases} 125=5^3\\ 216=6^3 \end{cases}\implies 5^3x^3+6^3\implies \stackrel{\textit{yes, it is}}{(5x)^3+6^3}$

Asheets answered Oct 31, 2020

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