I have a problem, I was wondering if anyone could give me a nudge in the right direction?

$\displaystyle 4-\frac{532}{h^2}=0$

On my online math program for my course, it is saying that I should have a whole number but I can't get one...

I added the fraction to both sides, multiplied by h^2, and then divided by 4, and then took the root of the answer... thoughts? Was that the correct procedure?