Using i

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

• –18

• –18i

• 18

• –18i²

(5x – 2i) + (–7x + 8i)

• –2x + 6i

• 12x + 6i

• –35x – 16i²

• –35 – 16i

Simplify √-4

• 2i
• -2i
• 2
• 4i

Simplify -√-8

• -i√8
• -2i√2
• 2i√2
• -8i

What does i² =  ?

• 1
• -1
• √-1
• √1

Calculate:
-4 (13 + 5i) 

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

6i (-5 + 10i)

• -30i + 60i²
• 30i − 16i²
• 11i + 60i²
• -11i²+ 16i

Simplify: 
(10+ 15i)-(48 - 30i)

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

i⁷

• i
• -i
• 1
• -1

Simplify
2i - 7i + 10

• 10 - 5i
• 5i
• 10 + 9i
• 10 + 5i