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

User Zkminusck
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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}

User Asheets
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