| x2+x+=0 |
| X1 = |
| X2 = |
In elementary algebra, a quadratic equation is any equation having the form: ax2 + bx + c = 0
In this equation the x is unknown, a, b, and c are constants number, they are non-zero number.
x =(- b ±√ b2 - 4 * a * c) / 2 * a
For example, a = 1, b = 5, c = 4, the result x = -1 and -4.