NTI Complex Numbers Practice

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

• -2+6i
• 12+6i
• -35-16i²
• -35 -16i

What does i² = ?

• -1
• √-1
• 1
• -√1

Simplify:
-3i(4 + 2i)

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

Multiply: 
(4 – 3i)(-7 – 2i)

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

How do you write a complex number?

• a-bi

• a+bi

• ai+b

• ai-b

√-36

• 6
• -6
• -6i
• 6i

What is i?

• 1

• -1

• √-1

• √1

Write in standard form: (5 + 3i)(5 - 3i)

• 34

• 16

• 25 - 30i + i²

• 24 - 30i

√-36

• 6
• -6
• -6i
• 6i