Question

The square root of 75 times the square root of 12.

A. the square root of 63

B. 3 times the square root of 7

C. 3 times the square root of 3

D. 8 times the square root of 3

Answer 1

`√(75)\cdot√(12)=√(900)=30` so I believe none of the answers are applicable.

But if it is a "minus"
`√(75)-√(12)` then it can be written as

`√(3\cdot25)-√(4\cdot3)=5√(3)-2√(3)=3√(3)`

and so that your answer