Question

simplify
$3 \sqrt{18}$
Please help me.
Thank You​

Answer 1

$3 \sqrt{18 } = 3 \sqrt{9 \times 2} \\ = 3 \times 3 \sqrt{2} \\ = 9 \sqrt{2}$

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Answer 2

3 under root 18 = 3 *(under root 3*3*2)

=3*3(under root 2)=9( under root 2