Question

please answer how it is 45

Answer 1

by multiplying it came 45, √5×√15×√27=45

Answer 2

hello,
√15 can be written as √3×√5
and √27 can be written as 3√3
now,
√5×√3×√5×3√3
=(√5)²×3√3×√3
=5×9
=45
hope this will be helpful
.