Powers of i and Operations with Complex Numbers

What does i² = ?

• 1

• √-1

• -1

• -√1

Tags

CCSS.HSN.CN.A.1

What is the "real part" of the complex number (-4-3i)?

• -4

• 4

• -3i

• 3i

Tags

CCSS.HSN.CN.A.1

What is the "imaginary part" of the complex number (-2+7i)?

• 2

• -2

• 7i

• -7i

Tags

CCSS.HSN.CN.A.1

Simplify i³⁸

• 1

• i

• -i

• -1

Tags

CCSS.HSN.CN.A.2

Simplify.

 $\sqrt{-48}$  

•  $2i\sqrt{12}$  
  

•  $6i\sqrt{8}$  
  

•  $4i\sqrt{3}$  

•  $3i\sqrt{4}$  

Tags

CCSS.HSN.CN.A.1

CCSS.HSN.CN.A.2

CCSS.HSN.RN.A.2

What is the simplifies form of (11 - 7i) - (-3 + 12i)

• 8 - 19i

• 8 + 5i

• 13- 19i

• 14 -19i

Tags

CCSS.HSN.CN.A.2

Multiply: 
(4 – 3i)(7 + 2i)

• A.  22 - 13i
• B.  28 - 19i
• C.  34 - 13i
• D.  -34 - 29i

Tags

CCSS.HSN.CN.A.2

What is the simplified form of (-5i)(-3i)

• -15

• -15i

• 15

• -15i²

Tags

CCSS.HSN.CN.A.2

What is the conjugate of -8 + 2i?

• 8 - 2i

• 8 + 3i

• -8 - 2i

• 2 - 8i

Tags

CCSS.HSN.CN.A.3

What is the standard form for a complex number?

• -8i
• a + bi
• bi + a
• -8i + 8

Tags

CCSS.HSN.CN.A.1