5.3 adding and subtracting polynomials · teacher booklet.notebook 2 february 24, 2020 jan 25 8:59...
TRANSCRIPT
Teacher Booklet.notebook
1
February 24, 2020
Jan 258:49 PM
5.3 Adding and Subtracting PolynomialsWhy would you ever need to do this? Consider...
A music store rents instruments.
Drum Rental
$55/month + $30 deposit
Kira wants to play drums first semester.
a) What would it cost Kira to rent the drums for 3 months, including the deposit?
b) Write an expression to show the total cost for any number of months, including the deposit.
Teacher Booklet.notebook
2
February 24, 2020
Jan 258:59 PM
$22/month + $20 deposit
Electric Guitar Rental
$55/month + $30 deposit
Drums
Mark wants to play both drums and guitar.
a) Write an expression to show the total cost for renting both instruments for any number of months, including deposits. Can you find a simpler expression?
b) Write an expression to show the difference in cost between the two instruments, including the deposits.
Teacher Booklet.notebook
3
February 24, 2020
Jan 259:03 PM
A. Adding Polynomials
Add 3x - 4 and 2x + 5.
Method 1: Use a Model Method 2: Use Symbols
Teacher Booklet.notebook
4
February 24, 2020
Jan 259:06 PM
Use two methods to add the following:
Method 1 Method 2
Model Symbols
(2a-1) + (6-4a)
(3t2-5t) + (t2+2t+1)
Teacher Booklet.notebook
5
February 24, 2020
Jan 259:10 PM
B.Opposite Polynomials
A number and it's opposite add up to be zero.
An opposite is one that adds to be zero.
What is the opposite of:
2x
2x2 + x - 3
x2 - 1
Teacher Booklet.notebook
6
February 24, 2020
Jan 259:16 PM
C.Subtracting Polynomials
Subtract 3x + 2 from 4x - 1
Method 1: Use a Model
Method 2: Add the Opposite
Teacher Booklet.notebook
7
February 24, 2020
Jan 259:18 PM
Show Us What You Got!
1. (2x - 3) - (-x + 2) 2. (5x2-x+4) - (2x2-3x-1)
Teacher Booklet.notebook
8
February 24, 2020
Jan 259:41 PM
Page 196 # 5-7, 16, 17
Page 197 # 13-15
Teacher Booklet.notebook
9
February 24, 2020
Jan 259:20 PM
D.Applications
1. Simplify
(2x - 3) + (3x - 5) - (-3x - 4)
Teacher Booklet.notebook
10
February 24, 2020
Jan 259:21 PM
2. The perimeter of the following triangle is 6x2 - 7x. Find the missing side.
2x2 + 6x
5x2 + 8x
Teacher Booklet.notebook
11
February 24, 2020
Feb 2011:55 AM
Addition Pyramid
5
7
13
Teacher Booklet.notebook
12
February 24, 2020
Feb 2011:55 AM
Addition Pyramid
14
3
6
Teacher Booklet.notebook
13
February 24, 2020
Feb 2011:55 AM
Addition Pyramid
3x
5x
2x
TEST QUESTION
Teacher Booklet.notebook
14
February 24, 2020
Jan 259:41 PM
Page 198 # 21, 22, 24, 29
Teacher Booklet.notebook
15
February 24, 2020
Jan 258:49 PM
Test Date:Friday,
March 2nd
Teacher Booklet.notebook
16
February 24, 2020
Jan 3111:01 AM
Test Outline and Review