Complex Numbers (Addition/Subtraction/Multiplication)

What letter represents an imaginary number?

• a

• i

• j

• x

Tags

CCSS.HSN.CN.A.1

What does i² equal?

• -1

• √-1

• 1

• -√1

Tags

CCSS.HSN.CN.A.1

√-36

• 6
• -6
• -6i
• 6i

Tags

CCSS.HSN.CN.A.2

CCSS.HSN.CN.A.1

Simplify.

• 
• 
• 
• 

Tags

CCSS.HSA.SSE.A.2

CCSS.HSA.SSE.B.3

CCSS.HSN.RN.A.2

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

• True

• False

Tags

CCSS.HSN.CN.C.8

3+√-4

• 1

• 3-2i

• 5

• 3+2i

Tags

CCSS.HSN.CN.A.2

CCSS.HSN.CN.A.1

Simplify: 
(10+ 15i) - (48 - 30i)

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

Tags

CCSS.HSN.CN.A.2

Find the sum.
(5-2i) + (-7+8i)

• -2+6i
• 12+6i
• -35-16i²
• -35 -16i

Tags

CCSS.HSA.APR.D.7

(1-3i)(2+5i)

• 22-i
• 16-i
• 17-i

Tags

CCSS.HSN.CN.A.2

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

• 2-19i
• 23-i
• 34+5i
• 23-i

Tags

CCSS.HSA.APR.A.1