Complex Numbers and Operations

Simplify:

12

1 - i

• 6 + 6i

• 4 - 2i

• -2 + i

• 12 - 12i

y² + 1 = 0

• -i

• -1

• i, -i

• 1, -1

Use square roots to solve this equation: x² = -18

• ±√-18

• ±i√18

• ±3i√2

• ±2i√3

Subtract:

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

• 12 - 3i

• -6 - i

• -25 + 21i

• 9i

Multiply:

3i(5 - 4i)

• 15 - 4i

• 12 + 15i

• 8i + 7i²

• 3i²

Factor using sum of squares:

4x² + 16

• (2x + 4)(2x - 4)

• (2x + 4i)(2x - 4i)

• (2x + 8)(2x - 8)

• (2x + 8i)(2x - 8i)

x² + 100 = 0

• 50, -50

• 50i, -50i

• 10, -10

• 10i, -10i

Choose the correct answer for the operation pictured.

• 7-13i

• 7-i

• 1-13i

• 1-i

Simplify:  (4+2i)/(3-i)

• 1-i

• 1+i

• 10+10i

• 1+10i

• A

• B

• C

• D