Powers of i and Operations with Complex Numbers

Operations with complex numbers

Algebra 2

​St. George's

​Complex Numbers

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Multiple Choice

What does i² = ?

• -1
• √-1
• 1
• -√1

Multiple Choice

• A

• B

• C

• D

Multiple Choice

• A

• B

• C

• D

Multiple Choice

What is the simplified form of (-3 + 2i)(1- 4i)

• -2 - 2i

• 5 + 14i

• -11 -10i

• -3 -8i

Multiple Choice

What is the simplified form of (-6i)(3i)

• -18

• -18i

• 18

• -18i²

Multiple Choice

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

• -5+3i

• -24-4i

• -24-4i²

• -20

• -20-35i

Multiple Choice

• 21 - 16i

• 21 -24i

• 11 - 16i

• 11 - 24i

Multiple Choice

• 2 + 12i

• -34 + 12i

• 34 + 12i

• -2 + 12i

Multiple Choice

• 8 + 14i

• 3 + 14i

• 13 + 14i

• 11 + 14i

Multiple Choice

• 15i

• 9 + 6i

• -3i

• -9 + 6i

Multiple Choice

What are the coordinates of this complex plane?

• -8, -5i

• -8, 5i

• 7, 4i

• 7i, 2

Multiple Choice

What are the coordinates of this complex plane?

• -8, -4i

• 7, 7i

• 8, 4i

• -4, 8i

Multiple Choice

What are the coordinates of this complex plane?

• 9, 3i

• -9, -3i

• 3, 9i

• -3. -9i