The quadratic formula is used to find the roots of a quadratic equation. The quadratic equation must be in the form . The terms in must be in the exact order shown.
The quadratic formula is .
Move sliders , or .
Slider is the coefficient in the term .
Slider is the coefficient in the term .
Slider is the constant term (also the coefficient in the term ).
When the quadratic intersects the -axis, the quadratic has real number roots. Real numbers roots can happen in two ways. A quadratic intersect the -axis at two points, or a quadratic intersects the -axis at one point.
When the quadratic does not intersect the -axis, the quadratic has imaginary number roots.