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Number System — Maths STD 9 — Question

Maharashtra BoardEnglish MediumSTD 9MathsNumber System2 Marks
Question
Simplify:$\sqrt{72}+\sqrt{800}-\sqrt{18}$
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Answer

$\sqrt{72}+\sqrt{800}-\sqrt{18}$$=\sqrt{ 36\times2}+\sqrt{400\times2}-\sqrt{9\times2}$
$=6\sqrt{2}+20\sqrt{2}-3\sqrt{2}$
$=23\sqrt{2}$

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