Question

(a+b)² - a²+b²? what would be the answer​

Answer 1

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The answer of the sum is

${(a + b)}^{2} - ( {a}^{2} + {b}^{2} ) \\ {(a + b)}^{2} - {a}^{2} - {b}^{2} \\ so \\ this \: is \: equal \: to \\ 2ab$

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