Unit 4 Review and Solving

 $\sqrt{20}$  

• 2 $\sqrt{5}$  

• 5 $\sqrt{2}$  

•  $\sqrt{2}\sqrt{5}$  

•  $\sqrt{10}\sqrt{2}$  

Tags

CCSS.HSN.RN.A.2

 $\sqrt{40}$  

•  $2\sqrt{10}$  

•  $10\sqrt{2}$  

•  $4\sqrt{10}$  

•  $2\sqrt{2}$  

Tags

CCSS.HSA.SSE.B.3

CCSS.HSN.RN.A.2

Solve using square roots.

• ±81
• ±9
• ±3
• No real solution

Tags

CCSS.8.EE.A.2

Solve using square roots.

5x² - 4 = 41

• $x\ =\pm9$

• $x=\pm3$
  

• $x=\pm8$

• $x=\pm3\sqrt{5}$
  

Tags

CCSS.8.EE.A.2

Solve:  $g^2+1=19$  

•  $g=\pm2\sqrt{5}$  

•  $g=\pm2\sqrt{3}$  

• g = 9 or g = -9

•  $g=\pm3\sqrt{2}$  

Tags

CCSS.8.EE.A.2

Factor the following:

x² + 8x - 20

• (x + 4)(x + 5)

• (x - 10)(x + 2)

• (x - 2)(x + 10)

• (x + 8)(x - 10)

What are the coordinate of the vertex?

• (0, 0)

• (2, -2)

• x = 2

• (4, 0)

Factor:

2x² - 10x

• 2(x - 5)

• 2x(x - 5x)

• 2x(x - 5)

• 2x²(1 - 5)

Factor x² - 16

• (x + 8)(x - 8)

• (x + 4)(x - 4)

• 2x(x - 8)

• (x + 8)(x - 2)

Tags

CCSS.HSA.APR.C.4

Factor

r² + 16r + 60

• (r + 15)(r + 4)

• (r - 6)(r + 10)

• (r + 6)(r + 10)

• (r + 30)(r - 2)