And if this is the equation then we can tell by examination that the equation has no roots/solutions.
No matter what value x has, the is either negative or zero. The square root of 3 is positive. And when you subtract a positive from a negative (or from zero), as indicated by , there is no way for the expression to end up with a value of zero. can only have a negative value, no matter what value x has.
P.S. You did not mention complex roots. So I assumed that you were only interested in real roots (of which there are none).If you do want complex roots, then simply use the quadratic formula on (with an "a" of -1, a "b" of zero and a "c" of ).