Imaginary and Complex Numbers

Multiply: 
(4 – 3i)(-7 – 2i)

• A.  -23 + 13i
• B.  -23 - 29i
• C.  -34 + 13i
• D.  -34 - 29i

Tags

CCSS.HSN.CN.A.1

CCSS.HSN.CN.A.2

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

• -2+6i
• 12+6i
• -35-16i²
• -35 -16i

Tags

CCSS.HSN.CN.A.1

CCSS.HSN.CN.A.2

Multiply:
(2-5i)(2+5i)

• 29
• 4 - 25i
• 25 - 10i
• -21

Tags

CCSS.HSN.CN.A.1

CCSS.HSN.CN.A.2

What does i² =  ?

• 1
• -1
• √-1
• √1

Tags

CCSS.HSN.CN.A.1

CCSS.HSN.CN.A.2

(2i)(3i)

• 5i
• -5
• 6i²
• -6

Tags

CCSS.HSN.CN.A.1

CCSS.HSN.CN.A.2

Simplify √-23

• -√23
• 23i
• 23
• i√23

Tags

CCSS.HSN.CN.A.1

CCSS.HSN.CN.A.2

CCSS.HSN.RN.A.2

Simplify √-45

• 3i√5
• -3i√5
• -i√45
• 45i

Tags

CCSS.HSN.CN.A.1

CCSS.HSN.CN.A.2

Simplify 2√-32

• 2i√32
• 4i√2
• 8i√2
• -16i√2

Tags

CCSS.HSN.CN.A.1

CCSS.HSN.CN.A.2

CCSS.HSN.RN.A.2

Calculate:
(4 − 7i) − (-3 + 6i)

• 7 − 13i
• 7 − i 
• 1 − 13i
• 1 − i 

Tags

CCSS.HSN.CN.A.2