Imaginary numbers 2

Simplify -√-8

• -i√8
• -2i√2
• 2i√2
• -8i

Calculate:
(4 − 7i) − (-3 + 6i)

• 7 − 13i
• 7 − i 
• 1 − 13i
• 1 − i 

Calculate: 
(1 − 2i) + (-4 + 2i)

• -3
• -3 − 4i
• 5 − 4i
• 5

6i (-5 + 10i)

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

Calculate (multiply):
 (4 + 3i)(4 − 3i)

• 16 − 9i²
• 25
• 7
• 8 − 6i

Calculate (multiply):
(1 − 2i)(6 + 5i)

• 16 − 7i
• -16 + 7i
• -16 − 7i
• 16 + 7i

Find the conjugate of:
5 + 7i

• 5 − 7i
• -5 − 7i
• -5 + 7i

Find the conjugate of:
-4 − 8i

• -4 + 8i
• 4 − 8i
• 4 + 8i

Calculate(Divide, multiply by conjugate):

• 12/5 − 4/5i
• -8/10i − 4/5 
• -4/5 + 12/5i
• 12/5 + 4/5i

Calculate(Divide, multiply by conjugate):

• -3/4 − 1/4i
• 3/4 + 1/4i
• -3/4 + 1/4i
• 3/4 − 1/4i