Answer:
x>0
Explanation:
you can also write the expression like
√7x^2
----------
√3x
( I tried making a fraction above if you couldn't tell srry)
Also remember, if you're dividing by something, the denominator cannot be 0. So, a restriction is that x cant be 0. It can't also be negative, besides complex numbers, the root of a negative number is non-existant. So the value of x cannot be below 0. So the answer would be x>0.
X>0 because everything above 0 is positive and this inequality shows that it doesn't include 0 as well.
Ask if u have any more questions! :)