Question

Expand this (a^3+b^3)
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Answer 1

Answer:

a^3+3a^2b+3ab^2+b^3

Answer 2

εאραɳ∂ (α^3+ɓ^3)

${a}^{3} + {b}^{3} = {a}^{3} + {ab}^{2} - {a}^{2}b + {b }^{3} + { a}^{2}b - {ab}^{2}$

$= a ( {a}^{2} + {b}^{2} - ab) + b( {a}^{2} + {b}^{2} - ab)$

$to \: find \: {a}^{3} - {b}^{3}...replace \: b \: with \: - b$

${a}^{3} - {b}^{3} = (a - b)( {a}^{2} + {b}^{2} + ab)$

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