Question

(a + b)

3 = a

3 + b

3 + ___+____.
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Answer 1

Answer

Your answer is

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

${(a + b)}^{3} = {a}^{3} + {b}^{3} + 3 {a}^{2} b + 3a {b}^{2} \\ can \: be \: written \: as \\ {(a + b)}^{3} = {a}^{3} + {b}^{3} + 3ab(a + b)$