I f z 1 = 2 + 5 i a n d z 2 = 3 − 21 , w h a t i s z 1 × z 2 If\ z_1=2+5i\ and\ z_2=3-21,\ what\ is\ z_1\times z_2\ I f z 1 = 2 + 5 i a n d z 2 = 3 − 2 1 , w h a t i s z 1 × z 2 as a single complex number.

− 4 + 11 i -4+11i − 4 + 1 1 i

16 − 19 i 16-19i 1 6 − 1 9 i

A complex number can be expressed as a + bi. What does a represent?

the real part of the complex number

the imaginary part of the complex number

depends on the sign of the number

the square root of the complex number

Leon is asked to simplify √-120. A good first step would be to...

replace the negative with an i on the outside of the radical

The complex conjugate can be found by...

Changing the sign of both a and b

If you are adding two complex numbers you should

add only the real numbers together and then add only the complex numbers together then stop

add all the numbers together then divide by 2

add only the real numbers and subtract the complex numbers

add only the complex numbers and subtract the real numbers

You can simplify powers of i by... (Choose all correct answers)

dividing the exponent by 4 then use the remainder to determine the value

using the clock diagram and counting off the power until you get to the power in the problem

multiplying the exponent by 3 and then subtracting 2

Like terms have ________.

the same variable at the same power

the same power but different variables

the same variable but different powers

Operations on COmplex Numbers

11th - 12th Grade

•

30 Qs

Similar activities

Y10 Christmas Maths

9th - 12th Grade

•

25 Qs

Similarity(S.A.S and S.S.S. Similarity)

9th - 12th Grade

•

25 Qs

N4 Pythagoras

9th - 11th Grade

•

25 Qs

March 8 Trivia

9th - 12th Grade

•

25 Qs

$Working with fractions$

Working with fractions

1st Grade - University

•

25 Qs

Natural Growth Models

11th Grade

•

25 Qs

Statistics II (A5)

11th - 12th Grade

•

25 Qs

Enrichment "A" - Integers - Jan 14

9th - 12th Grade

•

25 Qs

Operations on COmplex Numbers

Quiz

•

Mathematics

•

11th - 12th Grade

•

Practice Problem

•

Medium

•

CCSS

HSN.CN.A.2, HSN.CN.A.1, HSN.CN.A.3

Standards-aligned

Elizabeth Borres

Used 115+ times

FREE Resource

30 questions

Show all answers

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

What is the simplified form of (-9 + 5i) + (3 -2i)

-12 + 31i

-6 + 3i

-11 + 7i

5 - 3i

Tags

CCSS.HSN.CN.A.2

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

What is the simplifies form of (11 - 7i) - (-3 + 12i)

8 - 19i

8 + 5i

13- 19i

14 -19i

Tags

CCSS.HSN.CN.A.2

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

What is the simplified form of (-6i)(3i)

-18

-18i

-18i²

Tags

CCSS.HSN.CN.A.2

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

What is the simplified form of (-3 + 2i)(1- 4i)

-2 - 2i

5 + 14i

-11 -10i

-3 -8i

Tags

CCSS.HSN.CN.A.2

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

What is the simplified form of (8 -3i)²?

16 - 6i

55 + 48i

55 - 48i

Tags

CCSS.HSN.CN.C.8

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

What is the simplified form of the above?

7/10 + 11/10 i

13/10 +1/10 i

5/4 - 3/2i

7/10 - 11/10 i

Tags

CCSS.HSN.CN.A.3

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

3i(4 - i)

-3 +12i

12 - 3i

3 + 12i

Tags

CCSS.HSN.CN.A.2

Create a free account and access millions of resources

Create resources

Host any resource

Get auto-graded reports

Continue with Google

Continue with Email

Continue with Classlink

Continue with Clever

or continue with

Microsoft

Apple

Others

Already have an account?

Similar Resources on Wayground

25 questions

Lesson 13: Equation of a Line

Quiz

•

11th Grade

25 questions

Evaluating Functions

Quiz

•

9th - 12th Grade

25 questions

SALARIES & WAGES ; QUIZ#2

Quiz

•

11th Grade

25 questions

Unit 6 Review - Quadratics

Quiz

•

9th - 12th Grade

25 questions

Fractions

Quiz

•

5th Grade - University

25 questions

Special Angles on Parallel Lines

Quiz

•

9th - 11th Grade

25 questions

Graphing Logarithms

Quiz

•

9th - 12th Grade

26 questions

Permutations Vs Combinations and Factorals

Quiz

•

10th Grade - University

Popular Resources on Wayground

25 questions

Multiplication Facts

Quiz

•

5th Grade

15 questions

4:3 Model Multiplication of Decimals by Whole Numbers

Quiz

•

5th Grade

10 questions

The Best Christmas Pageant Ever Chapters 1 & 2

Quiz

•

4th Grade

12 questions

Unit 4 Review Day

Quiz

•

3rd Grade

20 questions

Christmas Trivia

Quiz

•

6th - 8th Grade

18 questions

Kids Christmas Trivia

Quiz

•

KG - 5th Grade

14 questions

Christmas Trivia

Quiz

•

5th Grade

15 questions

Solving Equations with Variables on Both Sides Review

Quiz

•

8th Grade

Discover more resources for Mathematics

5 questions

Triangle Congruence Theorems

Interactive video

•

9th - 12th Grade

14 questions

Model and Solve Linear Equations

Quiz

•

9th - 12th Grade

17 questions

Identify Linear and Nonlinear Functions

Quiz

•

8th - 12th Grade

27 questions

Parallelograms, Rectangles, Rhombi, and Squares!

Quiz

•

10th - 12th Grade

19 questions

Function Vs Relation

Quiz

•

8th - 12th Grade

12 questions

Combine Like Terms

Quiz

•

6th - 12th Grade

30 questions

Simplify and Factor Algebraic Expressions

Quiz

•

7th - 12th Grade

20 questions

Properties of Logs

Quiz

•

11th Grade

Operations on COmplex Numbers

30 questions

What is the simplified form of (-9 + 5i) + (3 -2i)