Unit 7 Test Practice

Find roots/zeros:

(x+3)(x-9)

• 3, -9

• 12

• -12

• -3, 9

Factor and find roots zeros:

x²+4x-32=0

• x= -8, 4

• x= 8, -4

• x= -8, -4

Find roots/zeros:

y=(x-5)²

• x = 5

• x = - 5

• x= 5 and -5

The discriminant is

• aX²  + bX  +  c
• b - 4ac
• b² - 4ac
• b² + 4ac

Tags

CCSS.HSA-REI.B.4B

For the function below, is the discriminant positive, negative, or zero?

___________

y = x² + 4x + 4

• Positive

• Negative

• Zero

• Not Sure

Tags

CCSS.HSA-REI.B.4B

If the discriminant is positive, then the solution will be

• one real solution

• two real solutions

• no real solutions

• one imaginary solution

Tags

CCSS.HSA-REI.B.4B

x² = 16

• ± 4
• ± 8
• 4
• 8

Tags

CCSS.8.EE.A.2

3x² = 12

• ± 2
• 2
• ± √12
• ± 4

Tags

CCSS.8.EE.A.2

-5x² = -50

• ± 5
• ± 10
• ± √10
• -10

Tags

CCSS.8.EE.A.2

(x - 2) ² = 49

• 9  or  -5
• ± 9
• ± 5
• ± 7

Tags

CCSS.HSA-REI.B.4B