Zeros and the Quadratic Formula

Sometimes you cannot find the zeros of a
quadratic function easily. To find the zeros of
y=ax²+bx+c,

Substitute y =0 and solve for x . When a quadratic
equation is in standard form, you can use the
quadratic formula to solve this equation.

The solution of ax ²+bx+c=0 are

So,

Or

A quadratic equation has one, two , or no solution.