Question

what is formula for a3 + b3?​

Answer 1

a3 – b3 = (a – b) (a2 + ab + b2 ). 9. a3 + b3 = (a + b) (a2 - ab + b2 ).

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Answer 2

Given; a3 + b3

To Find; Formula of a3+b3

Solution; in this question, we will first write for the formula of (a + b)³

After expanding this equation and then solving it simultaneously will give the formula for a³ + b³

(a + b)³=a³ + b³ +3ab² + 3a²b

(a + b)³-3ab² - 3a²b = a³ + b³

(a + b)³-3ab(a+b)

(a+b)(a² + b²-ab)

Hence the formula is (a+b)(a² + b²-ab)