Question

prove that (a+b)²=a²+2ab+b²​

Answer 1

$= {(a + b)}^{2} \\ = (a + b)(a + b) \\ = {a}^{2} + ab + ab + {b}^{2} \\ = {a}^{2} + 2ab + {b}^{2}$

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Answer 2

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