Math 2 Complex Numbers

• 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

(3i)(-2+4i)

• -6+12i
• -12-6i
• -2+7i
• 12+6i

Multiply: 
(4 – 3i)(-7 – 2i)

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

What does i² = ?

• -1
• √-1
• 1
• -√1

Simplify
2i - 7i + 10

• -5i+10
• 5i
• 9i+10
• 5i+10

Simplify
3i - (4 + 7i)

• -4 + 10i
• 21 - 12i
• 4 - 10i
• -4 - 4i

Multiply
(2i)(3i)

• 5i
• -5
• 6i
• -6

Simplify: 
(10+ 15i) - (48 - 30i)

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