If x^2=64 and x is positive, what is the value of 3 √(x)

Question

If x^2=64 and x is positive, what is the value of

`3 √(x)`

Answer 1

x²=64
√x²=√64=8
x=8 (positive)
∛x=∛8=∛(2)³=2
∛x=2