Simplifying Imaginary Roots, Square Root Property, +/- Complex #

Simplify 

 $\sqrt{-4}$  

•  $2i$  
  

•  $-2i$  
  

•  $2$  
  

•  $4i$  
  

Simplify 

 $\sqrt{-45}$  

•  $3i\sqrt{5}$  
  

•  $-3i\sqrt{5}$  
  

•  $-i\sqrt{45}$  
  

•  $45i$  

What does

 $\sqrt{-1}=?$  

• 1

• -1

• i

• i²

Tags

CCSS.HSN.CN.A.1

i¹¹ is equal to....

• 1

• -1

• i

• -i

Tags

CCSS.HSN.CN.A.2

i⁶ is equal to...

• 1

• -1

• i

• -i

Tags

CCSS.HSN.CN.A.2

 $\left(2i\right)\left(3i\right)$  

• 5i

• -5

• 6i

• -6

Tags

CCSS.HSN.CN.A.2

Find the sum.
(5-2i) + (-7+8i)

• -2+6i
• 12+6i
• -35-16i²
• -35 -16i

Simplify: 
(10+ 15i)-(48 - 30i)

• 58 - 45i
• 58 - 15i
• -38 - 15i
• -38 + 45i

Tags

CCSS.HSN.CN.A.2

x²+141=20

• -11i, 11i 
• -11i
• 11i
• no solution

Tags

CCSS.HSA-REI.B.4B

CCSS.HSN.CN.C.7

-5x²=200

• -10i√2,10i√2
• 2i√10
• -2i√10
• -2i√10,2i√10

Tags

CCSS.8.EE.A.2