Math
posted by Alice .
Simplify the expression (square root)
√45/144
Thanks.

= 3√5/144
= √5/48 
Thank you for your answer but I was thinking that the answer will be √9.5/12 then 3√5/12 and I do not know what to do with the denominator "12".

Or could be 3√5/4*3 = 6√5.

I evaluated it according to the way you typed it.
It seems you are taking it as
√(45/144)
which would be √45/√144 = 3√5/12 = √5/4
Can you see why brackets would be essential for that interpretation? 
I get it , Thanks for everything