Unit 3 Review

√100

• 15
• 10
• 11
• 12

 $\sqrt{20}$  

• 2 $\sqrt{5}$  

• 5 $\sqrt{2}$  

•  $\sqrt{2}\sqrt{5}$  

•  $\sqrt{10}\sqrt{2}$  

 $\sqrt{18}$  

•  $3\sqrt{2}$  

•  $2\sqrt{3}$  

•  $9\sqrt{2}$  

•  $4\sqrt{3}$  

Simplify: √-45

• x = 3√5

• x = 9i√5

• x = 9√5

• x = 3i√5

Simplify: √-36

• x = 6

• x = 36i

• x = 6i

• x = i√6

Factor out the GCF:
10x³ - 15x

• x(10x² - 15)
• 5x(2x² - 3)
• 5(2x³ - 3x)
• 5x²(10x - 3)

Factor:
x² - 5x - 14

• (x - 2)(x + 3)
• (x - 2)(x + 7)
• (x + 2)(x - 7)
• (x - 2)(x - 3)

What are the zeros?

• x= 0 and x= -4
• x= 0 and x= 4
• y= 0
• x= 2

Solve by factoring: x² + 3x - 18 = 0

• x = -3 and x = 6
• x = 3 and x = -6
• x = -9 and x = 2
• x = 9 and x = -2

Factor Completely: 
3x² + 18x +15

• 3(x² + 6x + 5)
• (x + 5)(x + 1)
• 3(x + 5)(x + 1)
• Prime