Example 3: Using the quadratic formula | Quadratic equations | Algebra I | Khan Academy

How many real solutions does a quadratic equation have if its discriminant is greater than zero?

• Zero

• One

• Two

• Infinitely many

If the discriminant of a quadratic equation is equal to zero, how many real solutions does it have?

• Zero

• One

• Two

• Three

How many real solutions does a quadratic equation have if its discriminant is less than zero?

• Zero

• One

• Two

• Infinitely many

What is the term for the expression b² - 4ac in the quadratic formula?

• Coefficient

• Constant

• Discriminant

• Variable