Imaginary and Complex Numbers

What does i² =  ?

• 1
• -1
• √-1
• √1

Tags

CCSS.HSN.CN.A.1

Multiply:

(4 – 3i)(-7 – 2i)

• -23 + 13i

• -23 - 29i

• -34 + 13i

• -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.1

CCSS.HSN.CN.A.2

Multiply:

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

• 29

• 4 - 25i

• 25 - 10i

• -21

Tags

CCSS.HSA.APR.A.1

Multiply (2i)(3i) and simplify completely.

• 5i

• -5

• 6i²

• -6

Tags

CCSS.HSA.APR.A.1

Simplify √-23.

• -√23

• 23i

• 23

• i√23

Tags

CCSS.HSN.CN.A.1

CCSS.HSN.RN.A.2

Simplify.

• A

• B

• C

• D

Tags

CCSS.HSA.APR.A.1

Multiply (-2 + 7i)(-2 + 2i) and simplify completely.

• -10 + 8i

• -10 - 18i

• 18 - 10i

• -18 - 10i

Tags

CCSS.HSA.APR.A.1

Simplify √-36.

• 6

• -6

• -6i

• 6i

Tags

CCSS.HSN.CN.A.1

CCSS.HSN.RN.A.1

CCSS.HSN.RN.A.2