Complex Numbers Quiz

• 10
• -10
• 10i
• -10i

What is the complex conjugate of  4-3i?

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

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

• -2+6i
• 12+6i
• -35-16i²
• -35 -16i

Multiply: 
(4 – 3i)(-7 – 2i)

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

Simplify: 
(10+ 15i) - (48 - 30i)

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

(1-3i)(2+5i)

• 22-i
• 16-i
• 17-i

(2i)(3i)

• 5i
• -5
• 6i
• -6

What does i² = ?

• -1
• √-1
• 1
• -√1

Simplify: 
(7 + 2i)(9 - 6i)

• 75-24i
• 63 - 24i  - 12i²
• 51 - 24i
• 58 + 60i

Multiply
(3i)(-2+4i)

• -6+12i
• -12-6i
• -2+7i
• 12+6i