Unit 3 Review - Lessons 7 - 11

Find the value that completes the square.

x² + 16x + _

• 16

• 8

• 64

• -8

Tags

CCSS.HSA-REI.B.4B

Complete the Square and write in Vertex Form:
f(x) = x² + 6x + 5

• (x + 3)² - 4
• (x + 6)² - 4
• (x + 3x)² - 4
• (x + 3)² + 9

Tags

CCSS.HSA-REI.B.4B

Solve using square roots.

k² - 6 = 43

• k = √37

• k = 37 or - 37

• k = 7, k = -7

• no real solution

Tags

CCSS.8.EE.A.2

Solve the Quadratic Equation using square roots.
2(x - 4)² = 200

• ±10
• -14, 6
• -6, 14
• 100

Tags

CCSS.HSA-REI.B.4B

Find all the solutions for x when

x² + 9x - 36 = 0

• (x + 12)(x - 3)

• x = 12 and x = -3

• x = -12 and x = 3

• (x - 9)(x - 4)

Tags

CCSS.HSA-REI.B.4B

Tags

CCSS.8.EE.A.2

• A
• B
• C
• D

Tags

CCSS.HSA-REI.B.4B

What is the discriminant of

-2x² − x − 1 = 0 ?

• 76

• -7

• 9

• none of these

Tags

CCSS.HSA-REI.B.4B

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

• Positive

• Negative

• Zero

Tags

CCSS.HSA-REI.B.4B