Question

what is the (a+b)3 ?
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Answer 1

Answer:

(a + b)3 = (a + b)(a + b)(a + b)

= (a2 + 2ab + b2)(a + b)

= a3 + a2b + 2a2b + 2ab2 + ab2 + b3

= a3 + 3a2b + 3ab2 + b3

= a3 + 3ab(a+b) + b3

Therefore, (a + b)^3 formula is:

(a + b)3 = a3 + 3a2b + 3ab2 + b3

Step-by-step explanation:

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