The Quadratic Formula Answers

If x = –3 is the only x-intercept of the graph of a quadratic equation, which statement best describes the discriminant of the equation?

What is the discriminant of ?

Using the quadratic formula to solve 5x = 6x2 – 3, what are the values of x?

Using the quadratic formula to solve x2 = 5 – x, what are the values of x?

The graph of an equation with a negative discriminant always has which characteristic?

The first two steps in the derivation of the quadratic formula by completing the square are shown below. Which answer choice shows the correct next step?Step 1: Step 2:

When deriving the quadratic formula by completing the square, what expression can be added to both sides of the equation to create a perfect square trinomial?

Using the quadratic formula to solve 7x2 – x = 7, what are the values of x?

Which equation has the solutions ?

Which equation shows the quadratic formula used correctly to solve 5x2 + 3x – 4 = 0 for x?