Question

Prove that a3 +b3= (a+b)(a2-ab+b2)


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Answer 1

Answer:

(a+b)3 =(a+b)2 (a+b) <=do u mean

=>a3+b3+3ab(a+b)=(a+b)2 (a+b) =>a3+b3=(a+b)2 (a+b) - 3ab(a+b) =(a+b) {(a+b)2-3ab} =(a+b)(a2+b2+2ab-3ab) =(a+b)(a2+-ab+b2) verified.

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