Quiz on Complex Numbers

What is the simplified form of (-3 + 2i)(1- 4i)

• -2 - 2i

• 5 + 14i

• -11 -10i

• -3 -8i

Simplify: 
(10+ 15i)-(48 - 30i)

• 58 - 45i

• 58 - 15i

• -38 - 15i

• -38 + 45i

Use the Complex Conjugate Root Theorem to state another complex solution. Given that 3+5i is a root. 

• -3+5i

• -3-5i

• -5i

• 3-5i

Use the Complex Conjugate Root Theorem to state another complex solution. Given that -7i is a root. 

• 7i

• -7i+1

• 1-7i

• 1+7i

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

• -2+6i

• 12+6i

• -35-16i²

• -35 -16i

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

• -6+12i

• -12-6i

• -2+7i

• 12+6i

Simplify
(-6 - 2i)²

• 32

• 36-4i

• 36+24i

• 32+24i

Simplify.

• 
• 
• 
• 

(-5 + 10i)(-5 - 10i) = 125

• True

• False

Simplify 
√-25

• -5i

• 5

• 5i

• -5