3.8.4

Test (CS): Quadratic Functions

Question 1a of 20 ( 3 Factoring a Trinomial 148718 )

Maximum Attempts: 1

Question Type: Text Fill In Blank

Maximum Score: 3

Is Case Sensitive: false

Correct Answer: (x - 6)(x + 3), (x+3)(x-6)

Question: Factor the polynomial expression. If necessary, use the caret (^) to enter exponents. For example, write x2 as

x^2. x2 - 3x - 18

Attempt Incorrect Feedback

1st

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Global Incorrect Feedback

The correct answer is: (x - 6)(x + 3).

Question 1b of 20 ( 3 Factoring a Trinomial 245862 )

Maximum Attempts: 1


Maximum Score: 3


Correct Answer: (x - 6)(x + 4), (x + 4)(x - 6)

http://courses.apexlearning.com/apps/AceWeb/showPreview.do?activityID=279564

Question: Factor the polynomial expression. If necessary, use the caret (^) to enter exponents. For example, write x2 as x^2. x2 - 2x - 24


1st

Correct Feedback



Question 1c of 20 ( 3 Factoring a Trinomial 245863 )

Maximum Attempts: 1


Maximum Score: 3


Correct Answer: (x - 5)(x + 4), (x + 4)(x - 5)

Question: Factor the polynomial expression. If necessary, use the caret (^) to enter exponents. For example, write x2 as x^2. x2 - 1x - 20


1st

Correct Feedback




Maximum Attempts: 1


Maximum Score: 3


Correct Answer: (x - 1)(x - 4), (x-4)(x-1)

Question: Factor the polynomial expression. If necessary, use the caret (^) to enter exponents. For example, write x2 as x^2.

x2 - 5x + 4


1st

Correct Feedback


The correct answer is: (x - 1)(x - 4).


Maximum Attempts: 1


Maximum Score: 3


Correct Answer: (x - 5)(x - 1), (x - 1)(x - 5)


x^2.

x2 - 6x + 5


1st

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Maximum Attempts: 1


Maximum Score: 3


Correct Answer: (x - 6)(x - 1), (x - 1)(x - 6)


x2 - 7x + 6


1st

Correct Feedback




Maximum Attempts: 1


Maximum Score: 3


Correct Answer: (x + 8)(x - 6), (x-6)(x+8)


x^2. x2 + 2x - 48


1st

Correct Feedback


The correct answer is: (x + 8)(x - 6).


Maximum Attempts: 1


Maximum Score: 3


Correct Answer: (x + 9)(x - 7), (x - 7)(x + 9)


x2 + 2x - 63


1st

Correct Feedback




Maximum Attempts: 1


Maximum Score: 3


Correct Answer: (x + 7)(x - 5), (x - 5)(x + 7)


x^2. x2 + 2x - 35


1st

Correct Feedback




Maximum Attempts: 1


Maximum Score: 3


Correct Answer: (2x + 3)(x + 4), (x+4)(2x+3)


2x2 + 11x + 12


1st

Correct Feedback


The correct answer is: (2x + 3)(x + 4).


Maximum Attempts: 1


Maximum Score: 3


Correct Answer: (2x + 3)(x + 5), (x + 5)(2x + 3)

Question: Factor the polynomial expression. If necessary, use the caret (^) to enter exponents. For example, write x2 as x^2. 2x2 + 13x + 15


1st

Correct Feedback




Maximum Attempts: 1


Maximum Score: 3


Correct Answer: (2x + 5)(x + 3), (x + 3)(2x + 5)


x^2. 2x2 + 11x + 15


1st

Correct Feedback




Maximum Attempts: 1


Maximum Score: 3


Correct Answer: (5x - 1)(x + 5), (x+5)(5x-1)


5x2 + 24x - 5


1st

Correct Feedback


The correct answer is: (5x - 1)(x + 5).


Maximum Attempts: 1


Maximum Score: 3


Correct Answer: (6x - 1)(x + 6), (x + 6)(6x - 1)


6x2 + 35x - 6


1st

Correct Feedback




Maximum Attempts: 1


Maximum Score: 3


Correct Answer: (4x - 1)(x + 4), (x + 4)(4x - 1)


4x2 + 15x - 4


1st

Correct Feedback




Maximum Attempts: 1


Maximum Score: 3


Correct Answer: (4x + 3)(2x - 1), (2x-1)(4x+3)

Question: Factor the polynomial expression. If necessary, use the caret (^) to enter exponents. For example, write x2 as x^2. 8x2 + 2x - 3


1st

Correct Feedback


The correct answer is: (4x + 3)(2x - 1).


Maximum Attempts: 1


Maximum Score: 3


Correct Answer: (3x + 4)(2x - 1), (2x - 1)(3x + 4)


x^2.

6x2 + 5x - 4


1st

Correct Feedback




Maximum Attempts: 1


Maximum Score: 3


Correct Answer: (4x - 1)(2x + 3), (2x + 3)(4x - 1)


x^2. 8x2 + 10x - 3


1st

Correct Feedback


The correct answer is: (4x - 1)(2x + 3).

Question 7a of 20 ( 3 Difference of Squares 148724 )

Maximum Attempts: 1


Maximum Score: 3


Correct Answer: (2x + 9)(2x - 9), (2x-9)(2x+9)

Question: Factor the polynomial expression. If necessary, use the caret (^) to enter exponents. For example, write x2 as x^2. 4x2 - 81


1st

Correct Feedback



Question 7b of 20 ( 3 Difference of Squares 245874 )

Maximum Attempts: 1


Maximum Score: 3





1st

Correct Feedback



Question 7c of 20 ( 3 Difference of Squares 245875 )

Maximum Attempts: 1


Maximum Score: 3





1st

Correct Feedback



Question 8a of 20 ( 3 Perfect Square Trinomials 148725 )

Maximum Attempts: 1


Maximum Score: 3


Correct Answer: (x - 5)(x - 5), (x-5)^2

Question: Factor the polynomial expression. If necessary, use the caret (^) to enter exponents. For example, write x2 as x^2. x2 - 10x + 25


1st

Correct Feedback



Question 8b of 20 ( 3 Perfect Square Trinomials 245876 )

Maximum Attempts: 1


Maximum Score: 3


Correct Answer: (x - 6)(x - 6), (x - 6)^2

Question: Factor the polynomial expression. If necessary, use the caret (^) to enter exponents. For example, write x2 as x^2. x2 - 12x + 36


1st

Correct Feedback



Question 8c of 20 ( 3 Perfect Square Trinomials 245877 )

Maximum Attempts: 1


Maximum Score: 3


Correct Answer: (x - 7)(x - 7), (x - 7)^2


x2 - 14x + 49


1st

Correct Feedback



Question 9a of 20 ( 3 Perfect Square Trinomials 148726 )

Maximum Attempts: 1


Maximum Score: 3


Correct Answer: (3x + 2)(3x + 2), (3x+2)^2


x^2.

9x2 + 12x + 4


1st

Correct Feedback


The correct answer is: (3x + 2)(3x + 2).

Question 9b of 20 ( 3 Perfect Square Trinomials 245878 )

Maximum Attempts: 1


Maximum Score: 3


Correct Answer: (4x + 3)(4x + 3), (4x + 3)^2


16x2 + 24x + 9


1st

Correct Feedback



Question 9c of 20 ( 3 Perfect Square Trinomials 245879 )

Maximum Attempts: 1


Maximum Score: 3


Correct Answer: (2x + 3)(2x + 3), (2x + 3)^2


x^2. 4x2 + 12x + 9


1st

Correct Feedback



Question 10a of 20 ( 3 Zero Product Rule 148727 )

Maximum Attempts: 1

Question Type: Multiple Response

Maximum Score: 3

Question: Which of the following are solutions to the quadratic equation? Check all that apply.

x2 + 2x - 8 = 0

Correct Answers:

Choice

A. 28

*B. 2

C. 4

*D. -4

E. -1

F. 1


1st

Correct Feedback


The correct answers are: 2 and -4.

Question 10b of 20 ( 3 Zero Product Rule 245880 )

Maximum Attempts: 1


Maximum Score: 3


x2 + 3x - 10 = 0

Correct Answers:

Choice

A. 28

B. -2

*C. -5

D. -4

*E. 2

F. 1


1st

Correct Feedback


The correct answers are: -5 and 2.

Question 10c of 20 ( 3 Zero Product Rule 245881 )

Maximum Attempts: 1


Maximum Score: 3


x2 + x - 12 = 0

Correct Answers:

Choice

A. 28

B. 2

*C. -4

D. 4

E. -1

*F. 3


1st

Correct Feedback



Question 11a of 20 ( 3 Zero Product Rule 148728 )

Maximum Attempts: 1


Maximum Score: 3


2x2 + 7x - 2 = - x2 + 2x

Correct Answers:

Choice

A. 2

B. 1

*C. -2

D. 3

*E.

F. -


1st

Correct Feedback


The correct answers are: -2 and .

Question 11b of 20 ( 3 Zero Product Rule 245882 )

Maximum Attempts: 1


Maximum Score: 3


2x2 + 9x - 3 = - x2 + x

Correct Answers:

Choice

*A. -3

B. 1

C. -2

D. 3

*E.

F. -


1st

Correct Feedback



Question 11c of 20 ( 3 Zero Product Rule 245883 )

Maximum Attempts: 1


Maximum Score: 3


2x2 + 14x - 4 = - x2 + 3x

Correct Answers:

Choice

*A. -4

B. 1

C. 4

*D.

E. 3

F. -


1st

Correct Feedback




Maximum Attempts: 1


Maximum Score: 3


x2 + 8x + 16 = 7

Correct Answers:

Choice

*A. - 4

B. 4

C. -4

D.

*E. - - 4

F. + 4


1st

Correct Feedback


The correct answers are: - 4 and - - 4.


Maximum Attempts: 1


Maximum Score: 3


x2 + 10x + 25 = 7

Correct Answers:

Choice

A. 5

*B. - 5

C. -5

D.

E. + 5

*F. - - 5


1st

Correct Feedback




Maximum Attempts: 1


Maximum Score: 3


x2 + 12x + 36 = 7

Correct Answers:

Choice

A. -6

*B. - 6

C. -6

D.

*E. - - 6

F. + 6


1st

Correct Feedback



Question 13a of 20 ( 3 Completing the Square 148730 )

Maximum Attempts: 1


Maximum Score: 3


Correct Answer: 12

Question: What value of b makes the polynomial below a perfect square?

x2 - bx + 36


1st

Correct Feedback


The correct answer is: 12.

Question 13b of 20 ( 3 Completing the Square 245886 )

Maximum Attempts: 1


Maximum Score: 3


Correct Answer: 14


x2 - bx + 49


1st

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Question 13c of 20 ( 3 Completing the Square 245887 )

Maximum Attempts: 1


Maximum Score: 3


Correct Answer: 10


x2 - bx + 25


1st

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Maximum Attempts: 1


Maximum Score: 3


Correct Answer: 49/4, 12.25, 12 1/4

Question: What value of c makes the polynomial below a perfect square? If necessary, use the slash mark ( / ) as a

fraction bar. x2 + 7x + c


1st

Correct Feedback


The correct answer is: 49/4.


Maximum Attempts: 1


Maximum Score: 3


Correct Answer: 25/4, 6.25, 6 1/4

Question: What value of c makes the polynomial below a perfect square? If necessary, use the slash mark ( / ) as a fraction bar.

x2 + 5x + c


1st

Correct Feedback




Maximum Attempts: 1


Maximum Score: 3


Correct Answer: 81/4, 20.25, 20 1/4

Question: What value of c makes the polynomial below a perfect square? If necessary, use the slash mark ( / ) as a fraction bar. x2 + 9x + c


1st

Correct Feedback




Maximum Attempts: 1


Maximum Score: 3


Correct Answer: 9

Question: What value of c makes the polynomial below a perfect square?

4x2 + 12x + c


1st

Correct Feedback




Maximum Attempts: 1


Maximum Score: 3


Correct Answer: 16


4x2 + 16x + c


1st

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Maximum Attempts: 1


Maximum Score: 3


Correct Answer: 4


9x2 + 12x + c


1st

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Question 16a of 20 ( 3 Standard Form of Quadratic Equations 154436 )

Maximum Attempts: 1


Maximum Score: 3


2x2 + 5x - 10 = x2 + 4

Correct Answers:

Choice

A. 3

B. 7

*C. -7

D.

*E. 2

F. -


1st

Correct Feedback



Question 16b of 20 ( 3 Standard Form of Quadratic Equations 245892 )

Maximum Attempts: 1


Maximum Score: 3

Question: Which of the following are solutions to the quadratic equation?Check all that apply.

2x2 + 6x - 10 = x2 + 6

Correct Answers:

Choice

*A. 2

*B. -8

C. 8

D.

E. -2

F. -


1st

Correct Feedback



Question 16c of 20 ( 3 Standard Form of Quadratic Equations 245893 )

Maximum Attempts: 1


Maximum Score: 3


2x2 + 7x - 14 = x2 + 4

Correct Answers:

Choice

*A. 2

B. 9

C. -7

D.

*E. -9

F. -


1st

Correct Feedback




Maximum Attempts: 1

Question Type: Multiple Choice

Maximum Score: 3

Question: Use the quadratic formula to find the solution to the quadratic equation below.

x2 - 5x - 4 = 0

Choice Feedback

A. x =

B. x =

C. x =

D. x =

*E. x =

Correct!

F. x =


The correct answer is: x = .


Maximum Attempts: 1


Maximum Score: 3


x2 - 6x - 5 = 0

Choice Feedback

A. x =

B. x =

C. x =

D. x =

*E. x =

Correct!

F. x =




Maximum Attempts: 1


Maximum Score: 3


x2 - 7x - 3 = 0

Choice Feedback

A. x =

B. x =

C. x =

D. x =

*E. x =

Correct!

F. x =




Maximum Attempts: 1


Maximum Score: 3

Question: Use the quadratic formula to find the solutions to the quadratic equation below. Check all that apply.

5x2 - x - 4 = 0

Correct Answers:

Choice

*A.

B. -1

C.

D.

*E. 1

F.


1st

Correct Feedback


The correct answers are: and 1.


Maximum Attempts: 1


Maximum Score: 3


4x2 - x - 5 = 0

Correct Answers:

Choice

A.

*B. -1

C.

D.

E. 1

*F.


1st

Correct Feedback




Maximum Attempts: 1


Maximum Score: 3


3x2 - x - 2 = 0

Correct Answers:

Choice

A.

B. -1

C.

*D. -

*E. 1

F.


1st

Correct Feedback


The correct answers are: - and 1.

Question 19a of 20 ( 3 Graphing Quadratic Equations 148584 )

Maximum Attempts: 1


Maximum Score: 3

Question: Which of the following combinations represents the vertex and two x-intercepts of the function given below?

y = x2 - 2x - 24

Choice Feedback

*A. Vertex: (1,-25); Intercepts: x = 6, -4 Correct!

B. Vertex: (7,5); Intercepts: x = 6, 8

C. Vertex: (-1,-21); Intercepts: x = 6, 4

D. Vertex: (0,0); Intercepts: x = -4, 6


The correct answer is:

Vertex: (1,-25); Intercepts: x = 6, -4.

Question 19b of 20 ( 3 Graphing Quadratic Equations 245898 )

Maximum Attempts: 1


Maximum Score: 3


y = x2 - 2x - 35

Choice Feedback

A. Vertex: (1,-25); Intercepts: x = 6, -4

B. Vertex: (7,5); Intercepts: x = 7, 8

*C. Vertex: (1,-36); Intercepts: x = 7, -5 Correct!

D. Vertex: (0,0); Intercepts: x = -4, -5


The correct answer is:

Vertex: (1,-36); Intercepts: x = 7, -5.

Question 19c of 20 ( 3 Graphing Quadratic Equations 245899 )

Maximum Attempts: 1


Maximum Score: 3


y = x2 - 2x - 48

Choice Feedback

A. Vertex: (1,-40); Intercepts: x = 6, 7

*B. Vertex: (1,-49); Intercepts: x = 8, -6 Correct!

C. Vertex: (-1,-21); Intercepts: x = 6, 4

D. Vertex: (0,0); Intercepts: x = -4, 6


The correct answer is: Vertex: (1,-49); Intercepts: x = 8, -6.


Maximum Attempts: 1


Maximum Score: 3

Question: The graph of a certain quadratic function does not cross the x-axis. Which of the following are possible values

for the discriminant? Check all that apply.

Correct Answers:

Choice

*A. -25

B. 0

C. 18

*D. -7


1st

Correct Feedback


The correct answers are: -25 and -7.


Maximum Attempts: 1


Maximum Score: 3



Correct Answers:

Choice

A. 25

*B. -4

C. 0

*D. -18


1st

Correct Feedback




Maximum Attempts: 1


Maximum Score: 3



Correct Answers:

Choice

A. 0

B. 3

*C. -18

*D. -1


1st

Correct Feedback



3.8.4

Documents

global incorrect

1st correct

x2 2x

x2

write x2

3 standard

1 text fill

fraction bar