The Quadratic Formula Answers

If the discriminant of a quadratic equation is equal to , which statement describes the roots?

In the derivation of the quadratic formula by completing the square, the equation is created by forming a perfect square trinomial. What is the result of applying the square root property of equality to this equation?

Which equation has the solutions ?

If 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 x2 + 20 = 2x, what are the values of x?

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:

Which equation shows the quadratic formula used correctly to solve 7x2 = 9 + x for x?

Which equation could generate the curve in the graph below?

Which equation could generate the curve in the graph below?