Alg 1: Solving Quadratic Equations Test Review

What are the factors AND solutions of x² + 2x – 3 = 0

• (x - 2)(x + 1); x=2, x=-1
• (x + 1)(x - 3); x=-1, x=3
• (x + 2)(x - 1); x=-2, x=1
• (x - 1)(x + 3); x=1, x=-3

Tags

CCSS.HSA-REI.B.4B

Factor and Solve

2x² - 3x - 2 = 0

• x = 1, x = -1

• x = -1/2, x = 2

• x = 1/2, x = 2

• x = 1/2, x = 1

Tags

CCSS.HSA-REI.B.4B

Solve by factoring: x² = 7x + 18

• -7 and -18

• 9 and 2

• 9 and -2

• 2 and 7

Tags

CCSS.HSA-REI.B.4B

Solve for x:

(x-5)(x+6)=0

• {5,5 }

• { -5,-5 }

• { -5,-6 }

• {5,-6 }

Tags

CCSS.HSA-REI.B.4B

What is the first step in solving 
(x + 2)(x - 3) = 0      ?

• Plug in zero for x
• Solve for x
• FOIL
• Set each binomial factor equal to zero

Tags

CCSS.HSA-REI.B.4B

Solve by factoring:
x² - 9x = 0

• 9
• 0, 9
• -9, 0
• -9

Tags

CCSS.HSA-REI.B.4B

Solve by factoring.

n² - 2n = 0

• n = 2 and 0

• n = -2 and 0

• n = 2

• n = 0

Tags

CCSS.HSA-REI.B.4B

5x²=-15

• 3, -3
• 1.7, -1.7 
• 1.5, -1.5 
• no solution 

Tags

CCSS.8.EE.A.2

2x²=98

• 49, -49
• 9.89, -9.89
• 7, -7
• no solution 

Tags

CCSS.8.EE.A.2

2x²= 30

• x= √5
• x= √30
• x= √15
• x= ±5

Tags

CCSS.8.EE.A.2