Question

(a+b)²= ?
(a-b)²=?
(a-b)³=?
(a+b)³=?
(a+b+c)²=?
tell fast​

Answer 1

Answer :. (a+b)^ = a^ + 2ab +b^ (a-b)^ = a^ - 2ab + b^ (a-b)3 = a3 - 3a^b + 3ab^ - b3 (a+b)3 = a3 + 3a^b + 3ab^ + b3 (a+b+c)^ = a^+b^+c^ + 2ab + 2bc + 2ca.

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