Algebra II - Unit 2 Quiz (MM)

Simplify: 
(7 + 2i)(9 - 6i)

• 75-24i
• 63 - 24i  - 12i²
• 51 - 24i
• 58 + 60i

What does i² = ?

• -1
• √-1
• 1
• -√1

Simplify 
√-25

• -5i
• 5
• 5i
• -5

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

• -2+6i
• 12+6i
• -35-16i²
• -35 -16i

i⁷

• i
• -i
• 1
• -1

i⁶⁶

• 1
• i
• -1
• -i

How do you write a complex number?

• a-bi

• a+bi

• ai+b

• ai-b

What is the simplified form of (8 -3i)²?

• 73

• 16 - 6i

• 55 + 48i

• 55 - 48i

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

• 7 - 4i

• 1 + 4i

• 1 - 8i

• 7 - 8i

What letter represents an imaginary number?

• a

• i

• j

• x