Complex Numbers

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

• 7 + 7i

• 1 - 3i

• 1 - 7i

• 7 - 3i

Tags

CCSS.HSN.CN.A.2

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

• 7 - 4i

• 1 + 4i

• 1 - 8i

• 7 - 8i

Tags

CCSS.HSN.CN.A.2

What does i² equal?

• -1

• √-1

• 1

• -√1

Tags

CCSS.HSN.CN.A.1

The expression (2 + 3i)² is equal to

• -5
• -5 + 12i
• 13
• 13 + 12i

Tags

CCSS.HSN.CN.C.8

(3 + 8i)(-2 - i)

• 2-19i

• 23-i

• 34+5i

• 23-i

Tags

CCSS.HSN.CN.A.2

Simplify

(-5 + 10i)(-5 - 10i) = 125

• True

• False

• 6
• -6
• -6i
• 6i

Simplify.

• 
• 
• 
• 

Simplify   i²³

• i
• -1
• 1
• -i