Respuesta :
Answer:
0,40,60
Step-by-step explanation:
where dots touch the x axis
Answer:
Roots of Quadratic Equations and the Quadratic Formula
Roots are also called x-intercepts or zeros. A quadratic function is graphically represented by a parabola with vertex located at the origin, below the x-axis, or above the x-axis. Therefore, a quadratic function may have one, two, or zero roots.