Complex Number Operations

What does i² = ?

• -1
• √-1
• 1
• -√1

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

• -2+6i
• 12+6i
• -35-16i²
• -35 -16i

(7 - 5i)(7 + 5i)

• 74
• 24
• 49 - 25i
• 49 + 25i

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

• -12 + 31i

• -6 + 3i

• -11 + 7i

• 5 - 3i

Simplify:

3 - 4i - (6i - 2)

• 5 - 10i

• 1 - 10i

• 1 - 2i

• 5 - 2i

Simplify:

(2 - 5i)(4 + i)

• 13

• 3

• 6 - 4i

• 13 - 18i

Simplify

• (-10+6i)/17

• (1+50i)/61

• (-23+36i)/25

• (-21+33i)/34