Question

${a + b}^{2}$
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Answer 1

Answer:

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