Question

What's the formula of


(a+b)³ = ?

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Answer 1

(a+b)³=a³+3a²b+3ab²+b³

Answer 2

Explanation:

Hello!

(a+b)(a+b)(a+b)

(a+b)(a+b) = a²+2ab + b²

(a²+2ab + b²) (a+b)=

a³ + a²b + 2a²b + 2ab² + ab² + b³ =

a³ + b³ + 2a²b + 2ab² + ab² + a²b