Math 8 EFH Test 5 Review

Factoring Regular

100

x² + 9x + 20 = 0

What is x = –4, –5?

200

x² + 4x – 12 = 0 

What is –6, 2?

300

x² – x – 20 = 10

What is 6, –5?

400

x² + 16x + 51 = 3

What is x = –4, –12?

Factoring Medium & Hard

100

2x²+14x+24=0

What is -3, -4?

200

4x² + 48x + 140 = 0

What is –5, –7?

300

3x² + 8x – 16 = 0

What is 

x = -4, 4/3

400

8x² + 10x – 3 = 0

What is 

-3/2, 1/4

Square Root Method

100

x² = 36

What is 6, –6?

200

x² = 24

What is 

±2sqrt(6)

300

x² + 10 = 40

What is 

x = +-sqrt(30)

400

2x² + 12 = 30

What is 3, -3

Quadratic Formula

100

6x² + 9x + 2 = 0

What is 

x = (-9+-sqrt(33))/12

200

x² + 5x + 3 = 0

What is 

(-5±sqrt(13))/2

300

5x² – 4x – 4 = 0

What is 

x=(2+-2sqrt(6))/5

400

9x² + 2x – 3=0

What is x = 

(-1±2sqrt(7))/9