Adding, Subtracting, & Multiplying Complex Numbers

Adding, Subtracting, & Multiplying Complex Numbers

12th Grade

25 Qs

quiz-placeholder

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Adding, Subtracting, & Multiplying Complex Numbers

Adding, Subtracting, & Multiplying Complex Numbers

Assessment

Quiz

Mathematics

12th Grade

Hard

CCSS
HSA.APR.A.1

Standards-aligned

Created by

Kimberly Conner

Used 1+ times

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25 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Another way to express √-1 is?

1

-1

i

0

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

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

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The complex conjugate can be found by...

Changing the sign of both a and b

Changing the sign of a

Changing the sign of b

Switching the a and b values

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The complex conjugate of 4 + 3i is

3 + 4i

3 - 4i

4 - 3i

4 + 3i

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Simplify the expression:
 (1 + 5i) + (1  5i)\left(1\ +\ 5i\right)\ +\ \left(1\ -\ 5i\right)  

 2 + 10i2\ +\ 10i  

 2 + 10i22\ +\ 10i^2  

 22  

 8-8  

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Simplify the expression:
 (5 + 4i)  (1  2i)\left(5\ +\ 4i\right)\ -\ \left(-1\ -\ 2i\right)  

 6 +6i6\ +6i  

 4 + 2i4\ +\ 2i  

 6  6i6\ -\ 6i  

 4  2i4\ -\ 2i  

Tags

CCSS.HSA.APR.A.1

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Simplify the expression:
 (8 + 9i) + (4  6i)\left(8\ +\ 9i\right)\ +\ \left(4\ -\ 6i\right)  

 17 + 3i17\ +\ 3i  

 12 + 3i212\ +\ 3i^2  

 17 2i17\ -2i  

 12 + 3i12\ +\ 3i  

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