Question

prove the following numbers √18=3√2 ​

Answer 1

Answer:

$\sqrt{18}$

$\sqrt{2 \times 3 \times 3}$

$3 \sqrt{2}$

Proved

Note : When there is same no twice under root then the no comes out of root and become one no.

Hope it helps.

Answer 2

\sqrt{18} = \sqrt{2 \times 3 \times 3} After it is shown to find the square root we will take only two numbers common under the root.

Root 18 = 3 root 2