Question

a^2+2×a×b+b^2 which formula​

Answer 1

Answer:

a^2+2×a×b+b^2

=(a+b)^2

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Answer 2

Answer:

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

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