Complex Numbers Quiz

Simplify

(12 - 4i) + (-2 + 8i)

• 8 + 104i

• 10 + 4i

• 14 - 4i

• 10 - 12i

 $\left(1-3i\right)\left(2+5i\right)$  

• 22-i

• 16-i

• 17-i

 $\left(3+8i\right)\left(-2-i\right)$  

• 2-19i

• 23-i

• 34+5i

• 23-i

 $\left(-3-i\right)\left(6-i\right)$  

• -21-7i

• -19-3i

• -15-5i

• -17-9i

What is the conjugate you would multiply by?

• 5+2i

• 5-2i

• -5-2i

• -5+2i