Imaginary and Complex Numbers

Multiply: 
(4 – 3i)(-7 – 2i)

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

Tags

CCSS.HSN.CN.A.2

Simplify: 
(10+ 15i)-(48 - 30i)

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

Tags

CCSS.HSN.CN.A.2

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

• -2+6i
• 12+6i
• -35-16i²
• -35 -16i

Tags

CCSS.HSN.CN.A.2

Multiply:
(2-5i)(2+5i)

• 29
• 4 - 25i
• 25 - 10i
• -21

Tags

CCSS.HSN.CN.C.8

(2i)(3i)

• 5i
• -5
• 6i
• -6

Tags

CCSS.HSN.CN.A.2

(-3i)(i)(5i)

• 15i
• -15i
• -15i³
• 15i³

Tags

CCSS.HSN.CN.A.2

Simplify √-28

• -√28
• -2i√7
• 2i√7
• 28i

What is the conjugate of the following...

 $7-2i$  

• 7 - 2i

• -7 - 2i

• -7 + 2i

• 7 + 2i

Tags

CCSS.HSN.CN.A.3

Rationalize the denominator and simplify completely.

•  $\frac{7-13i}{26}$  
  

•  $\frac{1-i}{2}$  

•  $\frac{13-13i}{26-10i}$  
  

•  $\frac{1+i}{2}$  
  

Tags

CCSS.HSN.CN.A.3

What does i² = ?

• -1
• √-1
• 1
• -√1

Tags

CCSS.HSN.CN.A.1