Adding and Subtracting Complex Numbers

• 1

• -1

• i

• 0

What does i² =  ?

• 1
• -1
• √-1
• √1

How do you write a complex number?

• a-bi

• a+bi

• ai+b

• ai-b

Add/Subtract using the proper rules:
(7 + 2i) - (-12 - 4i)

• -5 - 2i
• 19 - 2i
• -5 + 6i
• 19 + 6i

Add/Subtract using the proper rules: (3 + 2i) + (7 - 12i)

• 10+10i

• 10-10i

• 10+14i

• 4-10i

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

• -2+6i
• 12+6i
• -35-16i²
• -35 -16i

Simplify: 
(10+ 15i) - (48 - 30i)

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