Download 7.1 Monomials

Objectives
The student will be able to:
1. multiply monomials.
2. simplify expressions with monomials.
PFA 5
Designed by Skip Tyler, Varina High School
Edited by Eddie Judd, Crestwood Middle School
A monomial is a
1. number,
2. variable, or
3. a product of one or more
numbers and variables.
Examples:
5
y
3x2y3
Why are the following not
monomials?
x+y
addition
x
y
division
2 - 3a
subtraction
Multiplying Monomials
When multiplying monomials, you
ADD the exponents.
1) x2 • x4
x2+4
x6
2) 2a2y3 • 3a3y4
6a5y7
Simplify
1.
2.
3.
4.
m7
m8
12
m
13
m
3
4
m (m )(m)
Power of a Power
When you have an exponent with an
exponent, you multiply those exponents.
1) (x2)3
x2• 3
x6
2) (y3)4
y12
Simplify
1.
2.
3.
4.
p2
p4
8
p
16
p
2
4
(p )
Power of a Product
When you have a power outside of the
parentheses, everything in the
parentheses is raised to that power.
1) (2a)3
23a3
8a3
2) (3x)2
9x2
Simplify
1.
2.
3.
4.
12r3
12r4
3
64r
4
64r
3
(4r)
Power of a Monomial
This is a combination of all of the other
rules.
1) (x3y2)4
x3• 4 y2• 4
x12 y8
2) (4x4y3)3
64x12y9
Simplify
1.
2.
3.
4.
12a8b12
81a6b7
16
81
81a b
8
12
81a b
2
3
4
(3a b )
Assignment
• Pg 362 11-45 Odds,
47-49, 52-53