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OpenStudy (anonymous):
(3a^3 − 5b^3) + _?_ a^3 +_?_ b^3 = (a^3+ b^3).
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Mehek (mehek14):
\(3a^3-a^3=?\)
Mehek (mehek14):
i's basically like subtracting 3-1 but you keep \(a^3\)
TheSmartOne (thesmartone):
Hint: \(\sf a^3 + b^3 = (a+b) (a^2-ab+b^2)\)
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