Complex Number Arithmetic

√-4

• -2
• -2i
• 2
• 2i

√-36

• 6
• -6
• -6i
• 6i

√-81

• 9i
• -9i
• -9
• 9

(5-2i) + (-7+8i)

• -2+6i
• 12+6i
• -35-16i²
• -35 -16i

(10+3i) - (2-9i)

• 20-27i
• 12-7i
• 8+12i
• 20-27i²

-6i+3i

• 3i
• -3i
• -2i
• -3i²

Choose the correct answer for the operation pictured.

• 7-13i
• 7-i
• 1-13i
• 1-i

Choose the correct answer for the operation pictured.

• 7-3i
• 7+13i
• -5+3i
• -5+13i

(5-2i) + (-7+8i)

• -2+6i
• 12+6i
• -35-16i²
• -35 -16i

Which of the following is equivalent to (3-5i)-(6+2i)

• -3-7i
• -3-3i
• 3-3i
• 9-7i