Simplifying Imaginary Number

Simplifying Imaginary Number

9th - 11th Grade

9 Qs

quiz-placeholder

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Simplifying Imaginary Number

Simplifying Imaginary Number

Assessment

Quiz

Mathematics

9th - 11th Grade

Practice Problem

Hard

CCSS
HSN.CN.A.2, HSN.CN.A.1, HSN.CN.C.8

Standards-aligned

Created by

Barbara White

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9 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Simplify √-25

i√25
5i
-5i
25i

2.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Simplify √-1

1
-i
-1
i

Tags

CCSS.HSN.CN.A.1

3.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Simplify -√-8

-i√8
-2i√2
2i√2
-8i

4.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Simplify √-45

3i√5
-3i√5
-i√45
45i

5.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Multiply: 
(4 – 3i)(-7 – 2i)

A.  -23 + 13i
B.  -23 - 29i
C.  -34 + 13i
D.  -34 - 29i

Tags

CCSS.HSN.CN.A.2

6.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Simplify: 
(10+ 15i)-(48 - 30i)

58 - 45i
58 - 15i
-38 - 15i
-38 + 45i

Tags

CCSS.HSN.CN.A.2

7.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Find the sum.
(5-2i) + (-7+8i)

-2+6i
12+6i
-35-16i2
-35 -16i

Tags

CCSS.HSN.CN.A.2

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