The Quadratic Formula

Question 1

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

Revolt · Accepted Answer

no x-intercept

Question 2

Which equation could generate the curve in the graph below?

Revolt · Accepted Answer

y = 3x2 – 2x + 1

Question 3

Which equation can be solved using the expression for x?

Revolt · Accepted Answer

2 = 3x + 10x2

Question 4

Using the quadratic formula to solve x2 + 20 = 2x, what are the values of x?

Revolt · Accepted Answer

1 plus-or-minus StartRoot 19 EndRoot i

Question 5

Which equation could generate the curve in the graph below?

Revolt · Accepted Answer

y = –2x2 – 16x – 28

Question 6

Which equation has the solutions ?

Revolt · Accepted Answer

x2 – 2x – 4 = 0

Question 7

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

Revolt · Accepted Answer

There are two complex roots.

The Quadratic Formula Answers