Complex Numbers and Operations

Complex Numbers and Operations

Assessment

Interactive Video

Mathematics

8th - 10th Grade

Practice Problem

Hard

CCSS
HSN.CN.A.2, HSN.CN.A.1, HSA.APR.A.1

+2

Standards-aligned

Created by

Ethan Morris

FREE Resource

Standards-aligned

CCSS.HSN.CN.A.2
,
CCSS.HSN.CN.A.1
,
CCSS.HSA.APR.A.1
CCSS.7.NS.A.2A
,
CCSS.7.NS.A.2B
,
This video tutorial explains how to multiply complex numbers. It starts with multiplying a monomial by a binomial using distribution, emphasizing the importance of recognizing i squared as negative one. The tutorial then demonstrates multiplying two binomials using the box method, combining like terms, and ensuring the result is in the standard form of a complex number.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the first step in multiplying a monomial by a binomial?

Combine like terms

Distribute the monomial to each term in the binomial

Add the coefficients

Convert I squared to negative 1

Tags

CCSS.HSN.CN.A.2

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the result of multiplying -5i by 2?

-10i

10i

-7i

35i

Tags

CCSS.HSN.CN.A.1

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does I squared equal?

1

-1

i

-i

Tags

CCSS.HSN.CN.A.1

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In the form a + bi, which part represents the real number?

a

b

a + b

i

Tags

CCSS.HSA.APR.A.1

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What method is used to multiply two binomials in the video?

Cross multiplication

FOIL method

Distributive property

Box method

Tags

CCSS.HSN.CN.A.2

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the product of 6i and 2?

6i

8i

12i

12

Tags

CCSS.HSN.CN.A.2

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the result of multiplying 6i by 4i?

24i cubed

24i squared

24

24i

Tags

CCSS.HSN.CN.A.2

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