Quiz - Complex Numbers

 $\sqrt{216}$  

•  $6\sqrt{4}$  

•  $4\sqrt{6}$  

•  $36\sqrt{6}$  

•  $6\sqrt{6}$  

Tags

CCSS.HSA.SSE.B.3

CCSS.HSN.RN.A.2

Solve for x     x² - 4 = 76

• x = 4 , -4
• x = 4√5    ,  -4√5
• x = 80   ,  x = -80
• x = 5√4    or    -5√4

Tags

CCSS.8.EE.A.2

33 = 18 - 3x²

• x = ±5i

• x = ±i√5

• x = ±√5

• x = i√5

Tags

CCSS.HSA-REI.B.4B

CCSS.HSN.CN.C.7

What does i² =  ?

• 1
• -1
• √-1
• √1

Tags

CCSS.HSN.CN.A.1

i⁷⁹

• i
• 1
• -1
• -i

Tags

CCSS.HSN.CN.A.2

Simplify:
(-3i)(4i)(-5i)

• -60i
• 60
• -60
• 60i

Tags

CCSS.HSA.APR.A.1

Multiply: 
(4 – 3i)(-7 – 2i)

• A.  -23 + 13i
• B.  -23 - 29i
• C.  -34 + 13i
• D.  -34 - 29i

Tags

CCSS.HSN.CN.A.2

Find the conjugate of:
-4 − 8i

• -4 + 8i
• 4 − 8i
• 4 + 8i

Tags

CCSS.HSN.CN.A.3

Calculate(Divide, multiply by conjugate):

• (12 - 4i)/5

• (-8i - 4)/5

• (-4 + 12i)/5

• (12 + 4i)/5