algebra
posted by kim .
simplify the following radical expression:
3 sqrt () 216x^2/x^2
a) sqrt() 6x
b)6
c)6 sqrt()x
d) 6 sqrt()x

If I have read your data correctly (I'm not sure what "()" means), and there are no typos:
3 * √(216x^2/x^2)
x^2's cancel each other out.
3 * √(216)
This does not match any of your choices.