Complex Numbers 1

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

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

• -2+6i
• 12+6i
• -35-16i²
• -35 -16i

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

• 29
• 4 - 25i
• 25 - 10i
• -21

(2i)(3i)

• 5i
• -5
• 6i²
• -6

(3i)(-2+4i)

• -6+12i
• -12-6i
• -2+7i
• 12+6i

What is the complex conjugate of  4-3i?

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

Which expression is equivalent to (3 - 4i) –(3 + 5i)?

• -9i
• -9
• 3-9i
• 3

Which expression is equivalent to (2 - 4i) +(5 + 7i)?

• 3+3i
• 7-3i
• 7+3i
• 3-3i

Which expression is equivalent to (-6 + i)²?

• 36 - 12i
• 35 - 12i
• 36i²
• 35i