Advanced Algebra Midterm Review

What does i² = ?

• -1
• √-1
• 1
• -√1

√-36

• 6
• -6
• -6i
• 6i

Calculate:
(4 − 7i) − (-3 + 6i)

• 7 − 13i
• 7 − i 
• 1 − 13i
• 1 − i 

Calculate:
-4 (13 + 5i) 

• -52 − 20i
• 9 + i
• 17 − 20i
• -52 + 20i

Simplify:
i⁷

• i
• -i
• 1
• -1