Complex Number Arithmetic

How should you think about the absolute value of a complex number?

• 10
• -10
• 10i
• -10i

(3 + 2i) + (4 - 5i)

• 7 + 7i

• 1 - 3i

• 1 - 7i

• 7 - 3i

3i + 2i

• 5i

• 5i²

• 6i

• -5

Calculate:
(4 − 7i) − (-3 + 6i)

• 7 − 13i

• 7 − i 

• 1 − 13i

• 1 − i 

Calculate: 
-12i + 7i

• 19i

• -19i

• 5i

• -5i

(5 − 3i) + (-6 + 2i)

• -1 -1i

• 11 + 5i

• -11 −  5i

• 11 − 1i

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

• 7 - 4i

• 1 + 4i

• 1 - 8i

• 7 - 8i

√-36

• 6

• -6

• -6i

• 6i