Question

$\sqrt{25 } + \sqrt{16} - 9 = 0$
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Answer 1

$\implies \: \sqrt{25} + \sqrt{16} - 9 = 0 \\ \\ \implies \sqrt{( {5)}^{2} } + \sqrt{( {4)}^{2} } - 9 = 0 \\ \\ \implies 5 + 4 - 9 = 0 \\ \\ \implies \: 9 - 9 = 0 \\ \\ \implies \: 0 = 0$

hence l.h.s = r.h.s