Question

I
$\sqrt{45}$
​

Answer 1

$\sf \huge \sqrt{45} \\ \\ \sf \huge \sqrt{3 \times 3 \times 5} \\ \\ \sf \huge \sqrt{ {3}^{2} \times 5 } \\ \\ \sf \huge \sqrt{ {3}^{2} } \times \sqrt{5} \\ \\ \sf \huge 3 \times \sqrt{5} = { \red{3 \sqrt{5} }}$