Question

Solve, square root of 18 multiplied by the square root of 8

Answer 1

It's:
18 times 8=144
sqrt 144=12
so the answer is 12

Answer 2

18=2*3*3
8=2*2*2
so 8*18 =2^4*3^2
root(8*18)=root(2^4*3^2)=2^2*3=12

Answer 3

Thanks :D