Adding & Subtracting
Polynomials
What is a Polynomial?
View this Cool Math lesson introducing
Polynomials.
There is only the 1 page of notes.
Describe Polynomials
View this Cool Math lesson introducing
terms describing Polynomials.
There are 3 pages of notes.
Be sure to complete the Your Turn
problems in your notebook. Check your
answers on the next slides.
Your Turn on Page 3
Find the degree of 3x - x2 .
The degree is 2.
Find the degree of
4
ab
-
2
2
7a b .
The degree is 5.
Find the degree of 7x - 1.
The degree is 1.
Adding & Subtracting
Polynomials
View this Cool Math lesson to learn how to
add and subtract polynomials.
There are 5 pages of notes.
Be sure to complete the Try It and Your
Turn problems in your notebook. Check
your answers on the next slides.
Try It on Page 2
3x  4w  z   6x  2w  5z 
Simplify:
Remove parenthesis.
Rearrange so
like terms are
together.
3x  4w  z  6x  2w  5z
3x  6x   4w  2w  1z  5z 
Combine like terms.
9x  2w  6z
Your Turn on Page 3
Simplify.
8x
2
 

 x  3  2x  6x  1
2
Remove parenthesis.
8x  x  3  2x  6x  1
2
Rearrange so like
terms are together.
Combine like terms.
8x
2
2

 2x  x  6x   3  1
2
10x  5x  4
2
Try It on Page 3
4a b  ab  3b
2
Simplify.
2
 
 1  a b  8ab  6a  5
2
2

Remove parenthesis.
4a b  ab  3b  1  a b  8ab  6a  5
2
2
2
2
Rearrange so like terms are together.
4a b  a b ab  8ab  3b
2
Combine like terms.
2
2
 6a  1  5 
2
5a b  7ab  3b  6a  4
2
2
2
Your Turn on Page 4
Simplify.
Remove parenthesis but
distribute the negative.
Rearrange so like
terms are together.
3x
2
 
 4x  8  x  7x  5
2

3x  4x  8  x  7x  5
2
3x
2
2

 x  4x  7x   8  5 
2
Combine like terms.
2x  11x  13
2
Your Turn on Page 5
Subtract 3x  6xy  y from x  4xy  5y .
2
Write as a subtraction.
2
x
Remove parenthesis but
distribute the negative.
Rearrange so like
terms are together.
Combine like terms.
2
2
 
2
 4xy  5y  3x  6xy  y
2
2
2
x  4xy  5y  3x  6xy  y
2
x
2
2
2



2
 3x  4xy  6xy   5y  y
2
2x  2xy  4y
2
2
2
2

Gizmo Practice Activity
Let's practice some more at the Explore Learning
website using the username and password given to
you AND found in the support documents.
Search for the "Addition of Polynomials - Activity A"
Gizmo, launch the Gizmo and try at least 5 problems.
After you have completed at least 5 Gizmo problems,
scroll down to the Assessment Questions and
complete the 4 multiple choice problems.
Pronto or Message me if you have questions.
Adding & Subtracting
Polynomials Practice
Practice Adding & Subtracting Polynomials at this Cool
Math website.
Select the “Give me a Problem” button to keep trying
problems.
Do your work in a notebook.
When you select “What’s the Answer?” your answer is
erased and correct answer is displayed. Having your
work in a notebook will allow you to compare your
answer to the correct answer.
Keep working problems until you get 4 out of 5 correct.
Way to Go!
You’ve finished reviewing
the notes for Adding and
Subtracting Polynomials.
Proceed to Module 9 Topic 1 Mastery
Assignment.