Practice problem
Consider the equations below: D=b2−4acx=−b±D2a\begin{array}{rcl} D &=& b^2 - 4ac \\ x &=& \frac{-b \pm \sqrt{D}}{2a} \end{array}Dx==b2−4ac2a−b±D
If D=0D = 0D=0, how many possible real values of xxx exist?
000
111
222
333
Type a concept, like “slope” or “photosynthesis”.
