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nCr Definitions and Properties

What is squar...

Question

What is square root of a^2+b^2

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Solution

Dear student
$\sqrt{a^{2} + b^{2}} = \sqrt{{(a + b)}^{2} - 2 a b} [∵ {(x + y)}^{2} = x^{2} + y^{2} + 2 x y]$
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