Mathematics for IGCSE & O level - Equations (Section 4 - No. 29)
Which of the following statements is correct about the roots of a quadratic equation?
They are the x-intercepts of the parabola.
They are the solutions to the equation.
They are found where the quadratic function crosses the y-axis.
They are always real numbers.
解释
The roots are where the quadratic equation equals zero, which is where the parabola intersects the x-axis.