Your mention of "Square Root Method" is not clear. Since you have two fractions in the left-hand expression, use what you have known since having "learned" about fractions; which is, find the lowest common denominator, and multiply both sides of the equation by it. In your example, the L.C.D. is 16*x.
If you perform this multiplication, you will effectively clear away the fractions. If done correctly, you should obtain a CUBIC equation.
Now, by curiosity, please explain what is this Square Root Method about which you want some help?