Complex Numbers Practive

Add/Subtract using the proper rules:
2i + 3 + 7 - 12 i

• 10i - 10
• -10i + 10
• 14i + 10
• -10i + 4

Tags

CCSS.HSN.CN.A.2

Add/Subtract using the proper rules:
(7 + 2i) - (-12 - 4i)

• -5 - 2i
• 19 - 2i
• -5 + 6i
• 19 + 6i

Tags

CCSS.HSN.CN.A.2

Add/Subtract using the proper rules:
-3i + 2 - 4i + 16 - (4 - 8i)

• -15i + 22
• i + 14
• -i + 14
• 15i - 22

Tags

CCSS.HSA.APR.A.1

Multiply:
2i (-3i + 7)

• 6 + 14i
• -6i² + 14i
• -6 + 14i
• 20i²

Tags

CCSS.HSA.APR.A.1

Multiply:
(2i + 4) (7i - 3)

• 27i - 26
• -14 + 15i - 12
• 15i + 2
• 15i - 26

Tags

CCSS.HSN.CN.A.2

Simplify: 
(7 + 2i)(9 - 6i)

• 75-24i
• 63 - 24i  - 12i²
• 51 - 24i
• 58 + 60i

Tags

CCSS.HSN.CN.A.2

What does i² = ?

• -1
• √-1
• 1
• -√1

Tags

CCSS.HSN.CN.A.1

Simplify 
√-25

• -5i
• 5
• 5i
• -5

Tags

CCSS.HSN.CN.A.2

CCSS.HSN.CN.A.1

• 10
• -10
• 10i
• -10i

Tags

CCSS.HSN.CN.A.2

CCSS.HSN.CN.A.1

CCSS.HSN.CN.B.4

CCSS.HSN.CN.C.7

What is the conjugate of 2 - 7i ?

• 7 + 2i

• 2 + 7i

• -2 - 7i

• -2 + 7i

Tags

CCSS.HSN.CN.A.3