Operations and Powers with Complex Numbers

Simplify: 
(7 + 2i)(9 - 6i)

• 75-24i

• 63 - 24i  - 12i²

• 51 - 24i

• 58 + 60i

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

• 21 - 16i

• 21 -24i

• 11 - 16i

• 11 - 24i

• 2 + 12i

• -34 + 12i

• 34 + 12i

• -2 + 12i

• 8 + 14i

• 3 + 14i

• 13 + 14i

• 11 + 14i

• 15i

• 9 + 6i

• -3i

• -9 + 6i

(3+4i)(-8-i)

• -5+3i

• -24-4i

• -24-4i²

• -20

• -20-35i

• A
• B
• C
• D

What is the simplified form of (-9 + 5i) + (3 -2i)

• -12 + 31i

• -6 + 3i

• -11 + 7i

• 5 - 3i