Quiz about Solving Quadratics

Question 1

Use the quadratic formula to solve: n² = 9n - 20

Accepted Answer

n = 4 and n = 5

Answer

n = 4 and n = -5

Answer

n = -4 and n = 5

Answer

n = -4 and n = -5

Question 2

What is this formula?

Accepted Answer

This is the quadratic formula.

Answer

This is the speed of light formula.

Answer

This is the zero product property.

Answer

This is scary.

Question 3

Solve by factoring: x² - 9x + 20 = 0

Accepted Answer

x = 4 and x = 5

Answer

x = -4 and x = -5

Answer

x = 20 and x = -9

Answer

x = -4 and x = 5

Question 4

Solve by using the quadratic formula.

7x² - 26x - 8 = 0

Accepted Answer

x = 4 and x = -2/7

Answer

x = -1 and x = -7/8

Answer

x = -4 and x = 2/7

Answer

x = 4 and x = -7/2

Question 5

Select the solutions to the equation

4x² + 11x + 7 = 0

Accepted Answer

x = - 1.75

Accepted Answer

x = - 1

Answer

x = 6

Answer

x = 1

Question 6

What are the solutions for this quadratic equation?

Accepted Answer

-4 and 0

Answer

4 and 0

Answer

-2 and 4

Answer

-2 and -4

Question 7

What are the solutions to the quadratic equation?

Accepted Answer

x = -4

Accepted Answer

x = 1

Answer

x = -1

Answer

x = 2

Answer

x = 4

Question 8

The quadratic function y = -2x² + 4x + 6 is pictured. What are the solutions to the equation 7.5 = -2x² + 4x + 6?

Accepted Answer

x = 0.5

Accepted Answer

x = 1.5

Answer

x = 1

Answer

x = 8

Answer

x = 6

Question 9

Solve Using the Quadratic Formula

x² + 4x - 40 = -8

Accepted Answer

x = -8 and x = 4

Answer

x = -10 and x = -4

Answer

x = -4 and x = 10

Answer

x = 8 and x = -4

Question 10

Solve using the quadratic formula.

2x² - 9x - 35 = 0

Accepted Answer

x = -5/2 and x = 7

Answer

x = 7/2 and x = -6

Answer

x = -5/2 and x =5

Answer

x = -3/7 and x =6

Question 11

2x² + 7x - 15 = 0

Accepted Answer

x = -5 and x = 1.5

Answer

x = -1.5 and x = 5

Answer

No Solution

Answer

x = 0.7 and x = 5

Question 12

Solve for x. Round to the nearest hundredth if necessary.

3x² = 16x + 12

Accepted Answer

x = -0.67 and x = 6

Answer

x = -6 and x = 0.67

Answer

x = 3.33 and x = 18

Answer

x = -3.33 and x = 18

Question 13

Solve for x. Round to the nearest hundredth if necessary.

2x² = -x + 3

Accepted Answer

x = -1.5 and x = 1

Answer

x = -1 and x = 1.5

Answer

x = 1.5 and x = -1

Answer

x = 1 and x = 1.5

Question 14

Use the Zero Product Property to solve for the values of x.

$$\left(x+2\right)\left(x-3\right)=0$$

Accepted Answer

x = -2 and x = 3

Answer

x = 2 and x = 3

Answer

x = -2 and x = -3

Answer

x = 2 and x = -3

Solving Quadratics

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