Mathematics for IGCSE & O level - Equations (Section 4 - No. 35)
What does the discriminant of a quadratic equation help determine?
The roots of the equation.
The vertex of the corresponding parabola.
The number and nature of the roots (real or complex).
The y-intercept of the corresponding parabola.
Giải thích
The discriminant tells you how many real solutions are in the equation.