Imaginary and Complex Numbers

What does i² =  ?

• 1
• -1
• √-1
• √1

Tags

CCSS.HSN.CN.A.1

Multiply: 
(4 – 3i)(-7 – 2i)

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

Tags

CCSS.HSA.APR.A.1

Simplify:

(10 + 15i) - (48 - 30i)

• 58 - 45i

• 58 - 15i

• -38 - 15i

• -38 + 45i

Tags

CCSS.HSA.APR.A.1

Find the sum.

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

• -2 + 6i

• 12 + 6i

• -35 - 16i²

• -35 - 16i

Tags

CCSS.HSN.CN.A.2

CCSS.HSN.CN.A.1

Multiply:

(2 - 5i)(2 + 5i)

• 29

• 4 - 25i

• 25 - 10i

• -21

Tags

CCSS.HSA.APR.A.1

(2i)(3i)

• 5i
• -5
• 6i²
• -6

Tags

CCSS.HSA.APR.A.1

Simplify √-23

• -√23
• 23i
• 23
• i√23

Tags

CCSS.HSN.CN.A.2

CCSS.HSN.CN.A.1

CCSS.HSN.RN.A.2

Simplify √-45

• 3i√5
• -3i√5
• -i√45
• 45i

Tags

CCSS.HSN.CN.A.2

CCSS.HSN.CN.A.1

CCSS.HSN.RN.A.2

-7i - 7 + 5i

• -7 - 12i
• 7 - 2i
• -7 + 12i
• -7 - 2i

Tags

CCSS.HSA.APR.A.1

(-5 - 5i)(1 + 5i)

• 30 - 20i
• 18 - 40i
• 20 + 30i
• 20 - 30i

Tags

CCSS.HSA.APR.A.1