Mathematics for IGCSE & O level - Equations (Section 8 - No. 1)
What does the 'b² - 4ac' part of the quadratic formula represent?
The y-intercept
The discriminant
The x-intercepts
The vertex of the parabola
Giải thích
b² - 4ac is called the discriminant. It helps to determine the number and nature of the roots.