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Multiplying Complex Numbers

Authored by Barbara White

Mathematics

9th Grade

CCSS covered

Used 8+ times

Multiplying Complex Numbers
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10 questions

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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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