Question

4. Find the value √45*√20​

Answer 1

√45*√20

= 3√5*2√5

= 30 answer

Answer 2

Answer:

Here's your answer

$\sqrt{45} \times \sqrt{120} \\ \sqrt{3 \times 3 \times 5} \times \sqrt{3 \times 2 \times 2 \times 5 \times 2} \\ 3 \sqrt{5} \times 2 \sqrt{3 \times 5 \times 2} \\ 3 \sqrt{5} \times 2 \sqrt{30} \\ 6 \sqrt{150} \\ 6 \sqrt{5 \times 3 \times 5 \times 2} \\ 6 \times 5 \sqrt{6} \\ 30 \sqrt{6}$

Answer is 30√6

Hope it helps ✌