Solving Quadratic Equations by Factoring

Find the zeros.

• 0 and 4
• 0 and -4
• 0
• -4

Tags

CCSS.HSA.APR.B.2

CCSS.HSA.APR.B.3

CCSS.HSA.REI.B.4

Solve for the values of x:
(x + 2)(x - 3) = 0

• { 2, 3 }
• { -2, -3 }
• { 2, 3 }
• { -2, 3 }

Tags

CCSS.HSA.REI.B.4

Solve by factoring: x² - 9x + 20 = 0

• x = -4 and x = -5
• x = 20 and x = -9
• x = 4 and x = 5
• x = -4 and x = 5

Tags

CCSS.HSA.REI.B.4

CCSS.HSA.SSE.A.2

Solve:  x² - 81 = 0 

• 9
• 9, -9
• 3, -3, 9, -9
• None of the above

Tags

CCSS.HSA.APR.B.3

CCSS.HSA.REI.B.4

CCSS.HSA.SSE.A.2

Solve by factoring:

n² - 2n = 0

• n = 2 and 0

• n = -2 and 0

• n = 2

• n = 0

Tags

CCSS.HSA.REI.B.4

CCSS.HSA.SSE.A.2

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

• Get factored form
• Find two numbers which add to make 6 and multiply to make -13
• Make it equal 0 by subtracting 3 on each side
• Type it all in a calculator.

Tags

CCSS.HSA.REI.A.1

CCSS.HSA.REI.B.4

Solve

x² + 2x - 20 = 4

• x = -6, x = 4

• x = 6, x = -4

• x = 12, x = -2

• x = 8, x = -3

Tags

CCSS.HSA.REI.B.4

Solve:  5x² + 10x + 60 = 4x² - 7x - 12

• -8, -9
• 8, 9
• 12, 6
• -12, -6

Tags

CCSS.HSA.CED.A.1

CCSS.HSA.REI.B.4

Solve 2x² - 7x + 6 = 0 by factoring

• x = -3/2 and x = -2

• x = -3 and x = -2

• x = 3 and x = 2

• x = 3/2 and x = 2

Tags

CCSS.HSA.REI.B.4

CCSS.HSA.SSE.A.2

Solve:   $12x^2-4x=0$  

• {4, 1/3 }

• {0, 4}

• { 0, 3 }

• { 0, 1/3 }

Tags

CCSS.HSA.APR.B.3

CCSS.HSA.REI.B.4