Unit 4B Review

Identify the roots of the quadratic.

• x = {-1, 3}

• x = {-3}

• x = {1, -4}

• x = {1}

What are the x-intercepts of the parabola?

• x = {0, 6}

• x = {-6}

• x = {-6, 0}

• x = {0}

Tags

CCSS.HSF-IF.C.7A

What are the solutions to the quadratic shown?

• x = {7, 1}

• x = {-4}

• x = {-1}

• x = {-7, -1}

• x = {6, 5}

• x = {-6, -5}

• x = {-5, -1}

• x = {1, 5}

Tags

CCSS.HSA-REI.B.4B

• x = {-24, -10}

• x = {10, 24}

• x = {-12, 2}

• x = {-2, 12}

Tags

CCSS.HSA-REI.B.4B

• x = {9}

• x = {-9}

• x = {-9, 9}

• No solution

Tags

CCSS.HSA-REI.B.4B

What is the first step to solving THIS equation by completing the square?
a² + 10a + 21 = 0

• Set the equation equal to zero
• Divide 10 by 2 and add the result to both sides
• Add a² and 10a together
• Subtract the 21

Tags

CCSS.HSA-REI.B.4B

What do you do to the b value to correctly complete the square?

• square it
• divide it by 2 and square the result
• divide it by 2 and take the square root of the result
• divide it by 2 only

Tags

CCSS.HSA-REI.B.4B

When factoring
x² - 4x + 4 = 20,
what goes in the blank?
(x - __ )² = 20

• 4
• 2
• 8
• 20

Tags

CCSS.HSA-REI.B.4B

Write the following quadratic expression in completed square form...

x² + 6x = 5

• (x + 3)² = 5

• (x + 6)² = 9

• (x + 3)² = 14

• (x + 6)² = 14

Tags

CCSS.HSA-REI.B.4B