Question

State if $6\sqrt{5}$ is a surd or not for:$\sqrt{180}$

Answer 1

$\sqrt{180}$

$=\sqrt{9\times 2\times 10}$

$=\sqrt{9\times 2\times 2\times 5}$

$=\sqrt{3\times 3\times 2\times 2\times 5}$

$=3\times 2\sqrt{5}$

$=6\sqrt{5}$