Quadratic Formula and Discriminant Practice

Front

What is the discriminant in a quadratic equation?

Back

Front

What does a positive discriminant indicate?

Back

A positive discriminant indicates that the quadratic equation has two distinct real roots.

Front

What does a zero discriminant indicate?

Back

A zero discriminant indicates that the quadratic equation has exactly one real root (a repeated root).

Front

What does a negative discriminant indicate?

Back

A negative discriminant indicates that the quadratic equation has no real roots, but two complex roots.

Front

What is the Quadratic Formula?

Back

Front

How do you set a quadratic equation to find x-intercepts?

Back

You set the quadratic equation equal to zero to find the x-intercepts.

Front

Back

x = -1 and x = -3.

Front

Back

x = -\frac{1}{3} and x = -5.

Front

Back

The discriminant is -7.

Front

What is the first step in using the Quadratic Formula?

Back