Multiplying Pure Imaginary Numbers

9th Grade

•

10 Qs

quiz-placeholder

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Multiplying Pure Imaginary Numbers

Multiplying Pure Imaginary Numbers

Assessment

Quiz

•

Mathematics

•

9th Grade

•

Hard

•

CCSS

HSN.CN.A.2, HSN.CN.C.8

Standards-aligned

Created by

Barbara White

FREE Resource

10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Multiply
3i(-2 + 4i)

-6+12i

-12-6i

-2+7i

12+6i

Tags

CCSS.HSN.CN.A.2

2.

MULTIPLE CHOICE QUESTION

5 mins • 12 pts

(-3-i)(6-i)

-21-7i

-19-3i

-15-5i

-17-9i

Tags

CCSS.HSN.CN.A.2

3.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

(3+8i)(-2-i)

2-19i

23-i

34+5i

23-i

Tags

CCSS.HSN.CN.A.2

4.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

The expression (2 + 3i)² is equal to

-5

-5 + 12i

14

13 + 12i

Tags

CCSS.HSN.CN.C.8

5.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

(7 - 5i)(7 + 5i)

74

24

49 - 25i

49 + 25i

Tags

CCSS.HSN.CN.C.8

6.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Simplify completely: (-4i)(3i)(4i)

Hint: i³ can be simplified

24

-48i

48i

60

Tags

CCSS.HSN.CN.A.2

7.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

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

-2+6i

12+6i

-35-16i²

-35 -16i

Tags

CCSS.HSN.CN.A.2

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