The imaginary unit i is defined as i = ​ (a)   , where

i² = ​ (b)   .

• -1
• -i
• 1

Tags

CCSS.HSN.CN.A.1

Are operations with complex numbers similar to operations with polynomials?​ (a)  

• Yes
• No

Tags

CCSS.HSN.CN.C.9

Imaginary numbers are closed under what arithmetic operation(s)?

Select all that apply.

• Addition

• Multiplication

• Subtraction

• Division

Tags

CCSS.HSN.CN.A.3

Complex numbers are closed under what arithmetic operation(s)?

Select all that apply.

• Addition

• Multiplication

• Subtraction

• Division

Tags

CCSS.HSN.CN.A.3

Simplify √-28

• -√28
• -2i√7
• 2i√7
• 28i

Simplify -4√-63

• 3i√7
• -12i√7
• -12√7
• 36√7

Use the powers of i to simplify

i⁹⁷

• 1

• i

• -1

• -i

Tags

CCSS.HSN.CN.A.2

• True

• False

Tags

CCSS.HSN.CN.A.2

• i

• 5i

• -i

• -5i

Tags

CCSS.HSN.CN.A.2

How do you write a complex number?

• a-bi

• a+bi

• ai+b

• ai-b

Tags

CCSS.HSN.CN.A.1