Discriminant of a quadratic (D equals b squared minus 4ac for ax²+bx+c=0 with a nonzero)
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D equals b squared minus 4ac for ax²+bx+c=0 with a nonzero
What each symbol means
| Symbol | What it stands for |
|---|---|
| D | Discriminant |
| a | Coefficient of x² (nonzero) |
| b | Coefficient of x |
| c | Constant term |
When to use this
Real coefficients; standard form ax²+bx+c=0 with a≠0.