Complex Numbers

​Complex Numbers

Multiple Choice

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

• -2+6i

• 12+6i

• -35-16i²

• -35 -16i

Multiple Choice

What does i² = ?

• -1
• √-1
• 1
• -√1

Multiple Choice

Simplify:
-3i(4 + 2i)

• 6 - 12i
• 6 + 12i
• -12i - 6i²
• -12i + 6i²

Multiple Choice

What letter represents an imaginary number?

• a

• i

• j

• x

Multiple Choice

Multiply: 
(4 – 3i)(-7 – 2i)

• A.  -23 + 13i
• B.  -23 - 29i
• C.  -34 + 13i
• D.  -34 - 29i

Multiple Choice

$$i=\sqrt[]{-1}$$

• True

• False

Multiple Choice

Simplify: 
(10+ 15i) - (48 - 30i)

• 58 - 45i
• 58 - 15i
• -38 - 15i
• -38 + 45i

Multiple Choice

How do you write a complex number?

• a-bi

• a+bi

• ai+b

• ai-b

Multiple Choice

How do you write a complex number?

• a-bi

• a+bi

• ai+b

• ai-b

Multiple Choice

What does i² equal?

• -1

• √-1

• 1

• -√1

Multiple Choice

(4 - 2i) - (3 + 6i)

• 7 - 4i

• 1 + 4i

• 1 - 8i

• 7 - 8i

Multiple Choice

Simplify

• 10

• -10

• 10i

• -10i

Multiple Choice

Simplify

• (-10+6i)/17

• (1+50i)/61

• (-23+36i)/25

• (-21+33i)/34

Multiple Choice

-6i+3i

• 3i

• -3i

• -2i

• -3i²

Multiple Choice

√-36

• 6
• -6
• -6i
• 6i

Multiple Choice

(3 + 2i) + (4 - 5i)

• 7 + 7i

• 1 - 3i

• 1 - 7i

• 7 - 3i

Multiple Choice

• A
• B
• C
• D

Multiple Choice

(4 - 2i) - (3 + 6i)

• 7 - 4i

• 1 + 4i

• 1 - 8i

• 7 - 8i

Multiple Choice

Solve
3x² - 5 = -446

• ±√-147

• 7i√3

• ±7i√3

• -7√3