Question

simplify the following
root-25 × root-9
​

Answer 1

Answer:

$\sqrt{25 } \times \sqrt{9} = \sqrt{ {5}^{2} } \times \sqrt{ {3}^{2} } \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = 5 \times 3 = 15$

Answer 2

Answer:

$\sqrt{25} \times \sqrt{9} \\ = \sqrt{ {5}^{2} } \times \sqrt{ {3}^{2} } \\ = \sqrt{5 \times 5} \times \sqrt{3 \times 3} \\ = 5 \times 3 \\ = \underline{ \underline{ 15}}$