a square- b square divide by a+ b
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Step-by-step explanation:
a
{a}^{2} + {b }^{2} + 2ab \div a + ba
2
+b
2
+2ab÷a+b
a^2+b^2+2ab = (a+b)^2
i.e. (a+b)^2÷a+b = a+b
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