The force, F, of the wind blowing against a building, is given by $F= \frac{C_D \rho V^2 A}{2} $, where V is the wind speed,ρ is the density of the air, A the cross-sectional area of the building, and $C_D$ is a constant termed the drag coefficient. Determine the dimensions of the drag coefficient.

$ \frac{10}{4x} \approx 2^{12} $

$$x^2 = 0$$
When $a \ne 0$, there are two solutions to $ax^2 + bx + c = 0$ and they are$$x = {-b \pm \sqrt{b^2-4ac} \over 2a}.$$,