S
ECTION
5.3
A
DDING
P
OLYNOMIALS
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R
EVIEW
:
You can only add or subtract two polynomials if they
are liketerms
Liketerms – terms with the same variable and the
exponents of corresponding variables are the same
Ex: Add or Subtract the terms:
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A
DDING
POLYNOMIALS
When adding polynomials, you can add them either
horizontally or vertically, depending on which one is easier
for you
Ex: Simplify:
Horizontal Method
All the terms are written in a
row and then you add or subtract
liketerms
Vertical Method
Stack the terms on top of one another
so that the liketerms are lined up in
columns
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P
RACTICE
: S
IMPLIFY
Horizontal Method
Vertical Method
Horizontal Method
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D
ISTRIBUTION
R
ULE
(
EXPANDING
)
When we have a number in front of the brackets, it
indicates how many groups of those terms there are
Simplify the expression by
multiplying each term in the
brackets with the number in front
Algebraic Model
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P
RACTICE
: S
IMPLIFY
EACH
EXPRESSION
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P
RACTICE
: S
IMPLIFY
THE
EXPRESSION
Expand the 2
nd
term
Combine Liketerms
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E
X
: F
IND
AN
EXPRESSION
FOR
THE
PERIMETER
OF
THE
POLYGONS
:
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P
RACTICE
: S
IMPLIFY
Rearrange the terms
from highest to lowest
degree
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H
OMEWORK
:
P229 #5, 6, 8 (ace) ,9 (ace), 10, 12
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