Complex Numbers

What is the value of i²?

• -1
• 1
• i
• -i

Which of the following is the complex conjugate of 3 + 4i?

• -3 + 4i
• -3 - 4i
• 3 - 4i
• 7i

Tags

CCSS.HSN.CN.A.3

What is the value of i ?

• -1

• $\sqrt{-1}$

• -i

• 2

Simply the radical

 $\sqrt{-24}$  

•  $2\sqrt{6}$  

•  $2i\sqrt{6}$  
  

•  $4i\sqrt{6}$  
  

•  $4\sqrt{6}$  

What is the real component of the following complex number:  7 – 4i

• -4i
• -4
• 7
• -7

What is the imaginary component of the following complex number:  -2 + 9i

• -2
• -9
• 9i
• 7i

Simplify the radical

 $\sqrt{-16}$  

• 4i

• 4

• 8

• 8i

Simplify: 
(10+ 15i) - (48 - 30i)

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

Tags

CCSS.HSN.CN.A.2

Find the DIFFERENCE.

(6 - 3i) - (4 + 7i)

• 10 + 4i

• 21 - 12i

• 2 - 4i

• 2 - 10i

Find the sum.

(5 - 2i) + (-7 + 8i)

• -2+6i

• 12+6i

• -35-16i²

• -35 -16i