|
*y = 2 + 3x + 5x2 |
|
*0 = 2 + 3x + 5x2 A quadratic equation has two roots (i.e. solutions). The roots of quadratic equation a x2 + b x + c = 0 whose coefficients are real numbers may be categorised as follows: * If b2 > 4 a c the roots are real, but different. * If b2 = 4 a c the roots are real, and equal. * If b2 < 4 a c the roots are [complex conjugate]? pairs (i.e. one root is y + i z, the other y - i z, where i is the complex number which satisfies i2 = -1 |
![[Home]](wikipedia.png)