Solving Quadratic Equations Quiz

Solve by factoring.

x² + 15x + 44 = 0

• {-8, 2}

• {-7, 5}

• {-11, -4}

• {-11}

Tags

CCSS.HSA-REI.B.4B

What should you do first in solving this equation?
x² + 6x - 13 = 3

• Get factored form
• Write down: a=1, b=6, c=-13
• Make it equal 0 by subtracting 3 on each side
• Type it all in a calculator.

Tags

CCSS.HSA-REI.B.4B

Solve by factoring.

b² + 2b - 24 = 0 (hint: find the zeros) FACTOR!

• x = 6 or x = -4

• x = -6 or x = -4

• x = 6 or x = 4

• x = -6 or x = 4

Tags

CCSS.HSA-REI.B.4B

Solve by taking square roots:
5b² - 4 = 41

• b = 9, b = -9
• b = 3, b = -3
• b = 8, b = -8
• no solution

Tags

CCSS.HSA-REI.B.4B

What are the solutions to the quadratic:

(x+2)(x-10) = 0

• -2 and 10

• -2 and -10

• 2 and 10

• 2 and -10

Tags

CCSS.HSA-REI.B.4B

Solve by taking square roots:

3d² - 12 = 24

• d = 4, d = -4

• d = 2, d = -2

• d = 6, d = -6

• no solution

Tags

CCSS.HSA-REI.B.4B

Solve the equation by factoring.

• x = -16

• x = -2, 4

• x = -4

• x = -4, 2

Tags

CCSS.HSA-REI.B.4B

Solve for x by factoring.
2x² + 17x + 21 = 0

• x= ^-21/₂, -17
• x= ²/₃, 16
• x=-7, ^-3/₂
• x=15, -³/₇

Tags

CCSS.HSA-REI.B.4B

• F

• G

• H

• J

Tags

CCSS.8.EE.A.2

Solve by taking square roots:
3 + 9r² = 12

• r = 0
• no solution
• r = 3, r = -3
• r = 1, r = -1

Tags

CCSS.8.EE.A.2