Question

what's the expansion ...alpha cube + beeta cube

Answer 1

Hi

Here is your answer

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( α + β )³ = α³ + β³ + 3αβ( α + β)

α³ + β³ = ( α + β )³ - 3αβ( α + β )

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Hope it helps U.. :)

Answer 2

$\alpha^{3} + \beta ^{3} = ( \alpha + \beta ) ^{3} - 3 \alpha \beta ( \alpha + \beta )$
Hope you understood it Mate