Question

Square root of 45 with radicals

Answer 1

√(45)
√(9×5)
√(3×3×5)
3√5

Answer 2

remember
$\sqrt{ab}=( \sqrt{a})( \sqrt{b})$ so

$\sqrt{45}=\sqrt{3*3*5}=( \sqrt{3})( \sqrt{3})( \sqrt{5})=(3)( \sqrt{5})=3 \sqrt{5}$