Imaginary and Complex Number Operations

Simplify.

• -5i
• 5
• 5i
• -5

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

i¹³

• -1
• 1
• i
• -i

Tags

CCSS.HSN.CN.A.2

Simplify

• (-10+6i)/17

• (1+50i)/61

• (-23+36i)/25

• (-21+33i)/34

Tags

CCSS.HSN.CN.A.3

What does i² = ?

• -1
• √-1
• 1
• -√1

Tags

CCSS.HSN.CN.A.1

Multiply:

(2 - 5i)(2 + 5i)

• 29

• 4 - 25i

• 25 - 10i

• -21

Tags

CCSS.HSN.CN.C.8

Simplify √-45

• 3i√5
• -3i√5
• -i√45
• 45i

i⁷⁹

• i
• 1
• -1
• -i

Tags

CCSS.HSN.CN.A.2