Question

Formula of (a+b) sq

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Answer 1

Answer:

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

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Answer 2

Answer:

$\boxed{a^2 + 2ab + b^2}$

Step-by-step explanation:

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