Complex number operations Part 2

Multiply: 
(4 – 3i)(-7 – 2i)

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

Tags

CCSS.HSA.APR.A.1

Simplify: 
(10+ 15i)-(48 - 30i)

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

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
• 6i²
• -6

Tags

CCSS.HSN.CN.A.2

(3i)(-2+4i)

• -6+12i
• -12-6i
• -2+7i
• 12+6i

Tags

CCSS.HSN.CN.A.2

What is i¹²⁹?

• -i
• i
• 1
• -1

Tags

CCSS.HSN.CN.A.2

What is the complex conjugate of  4-3i?

• A.  1/(4-3i)
• B. 1/(4+3i)
• C.  -4 + 3i
• D.  4 + 3i

Tags

CCSS.HSN.CN.A.3

Simplify the division problem: 
(2-4i)/(1+3i)

• -1-i
• (2-12i²)/10
• (5+5i)/4
• (-10-10i)/10

Tags

CCSS.HSA.APR.A.1

Simplify

• (-10+6i)/17
• (-8+15i)/17
• (-23+36i)/25
• (-21+33i)/34

Tags

CCSS.HSN.CN.A.3

5/(-5i)

• -i

• i

• 1/i

• -1/i