Question

$(a + b) {}^{2} and (a - b) {}^{2}$
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Answer 1

Answer:

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

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

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Answer 2

Anser:

(a+b)^2 = (a)^2 + (b)^2 + 2ab

(a-b)^2 = (a)^2 + (b)^2 - 2ab

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