Exploring Imaginary Numbers in Depth

Exploring Imaginary Numbers in Depth

Assessment

Interactive Video

Mathematics

8th - 12th Grade

Practice Problem

Hard

CCSS
HSN.CN.A.1, HSA-REI.B.4B, HSN.CN.C.7

Standards-aligned

Created by

Amelia Wright

FREE Resource

Standards-aligned

CCSS.HSN.CN.A.1
,
CCSS.HSA-REI.B.4B
,
CCSS.HSN.CN.C.7

10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the issue with having a negative sign under a square root in real numbers?

It indicates a calculation error.

It results in an imaginary number.

It results in a complex number.

It results in a positive number.

Tags

CCSS.HSN.CN.A.1

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the imaginary unit 'i' defined as?

The square root of any negative number

The square root of 0

The square root of -1

The square root of 1

Tags

CCSS.HSN.CN.A.1

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How is a pure imaginary number written?

a + b

a - bi

bi

a + bi

Tags

CCSS.HSN.CN.A.1

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the simplified form of the square root of -9?

3

i3

3i

9i

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the simplified form of the square root of -196?

196i

i14

14

14i

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the simplified form of the square root of -80?

i4√5

4i√5

i8√5

8i√5

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the simplified form of the square root of -32?

i8√2

8i√2

i4√2

4i√2

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