$${\mathtt{0}} = {\mathtt{\,-\,}}{\frac{{\mathtt{P}}}{{\mathtt{2}}}}{\mathtt{\,\small\textbf+\,}}{\mathtt{or}}{\mathtt{\,-\,}}{\sqrt{{\left({\frac{{\mathtt{p}}}{{\mathtt{2}}}}\right)}^{{\mathtt{2}}}{\mathtt{\,-\,}}{\mathtt{q}}}}$$ where p=b and q=c when a=1 in the general form of a quadratic equation 0=ax^2+bx+c. So first divide the right part of your equation so that the constant in front of x^2 equals 1 and then apply the given formula above.
