[color=#0000ff]Standard  form:[br][br] [math]\LARGE \textcolor{blue}{ax^2+bx+c=0.}[/math][br][/color] [br][br]Solutions are obtained with the formula [br] [br][color=#0000ff] [math]\LARGE \textcolor{blue}{x=\frac{-b\pm \sqrt{b^2-4ac}}{2a}}[/math][/color]  [br][br]If the discriminant [math]\Large b^2-4ac[/math][br][br][list][*]> 0, then there are two real solutions[/*][br][*] = 0, there is one real solution[/*][br][*] < 0, there is no real solution [/*][/list]