Download (-5)(-5) = 25

Warmups:
4
aa
3
1 3
( p )(15 p)
5
7
(2 x y)
2
(5mn) [(2mn ) ]
2
4 2 2
awwwwwwwwwww
9-1 Multiplying Monomials
Objective: To find the area or
volume of a shape.
Standard 10.0
Negative numbers and Powers
(-5)2
= (-5)(-5) = 25
3
(-5)
= (-5)(-5)(-5) = -125
-52
= -(5)2 = -25
Even exponent = positive #, Odd exponent = negative #
TOO 1.
(-3x)3
2. -(4x5y)3
3. (6xy5)(-3xy2)
• Things that are multiplied together are called…
▫FACTORS!
Zero Power
• Anything to the zero power is….. ?
▫1
0
12 
3x y 
x 
12x 
0
0 5
0
Example
1
Find the area of the shape.
2
3a b
2 2
5a b
Area = (length)(width)
Example
2
Find the volume of the shape.
3ab
4 2
2b 3
2a b
Volume = (length)(width)(height)
Your turn!
1. Pick a shape:
or
2. Label the sides with monomials
1. Don’t be afraid to use negative coefficients and
fractions 
3. Switch with a partner (across the aisle)
4. Partner will find area or volume
5. Switch back and check answer
Homework
• 9-1 Practice (worksheet)
If your homework
doesn’t make you
smile, I hope this
little guy does!!
Whiteboards 
• Whiteboard
• Sock
• marker
Big Yellow Dice Game!!
Review
3 
3
2 2
( ) 
7
1 4
( ) 
5
9x y 
0
2
Review
9
6
( x )( x )
(13x)
4
2
3
(7 x )(8 x )
x
15
169x
2
56x
7
Review
(2 x y)
3
x
6 i6
3
32x y
5
15
4
6
4
(4 x y)(3x y)
5
x 4
7
12x y
2
Review
4 2
4 3
(5 x ) (2 x )
200x
(6 x  xy  y )  (8xy  2 y )
2
2
20
2
6 x  9 xy  3 y
2
( x  3x  9)  (9 x  4 x  6)
2
2
8 x  7 x  3
2
2
Review
4(5 x  7 y )
8
5
( x )( x )
(12 x)
2
20 x  28 y
13
x
12
144x
Math Lab
To review Adding and Multiplying
Monomials.
Standard 10.0
Math Lab Warmups
7 2
4 3
(3x ) (2 x )
(2 x2  3xy  y 2 )  (5xy  2 y 2 )
(7 x  4 x  11)  (9 x  3x  5)
2
2
Let’s review some concepts..
• Rules of exponents
• Factors are __________________
• Zero Exponent rule: ______________
Review
4 2
4 3
(5 x ) (2 x )
200x
(6 x  xy  y )  (8xy  2 y )
2
2
20
2
6 x  9 xy  3 y
2
( x  3x  9)  (9 x  4 x  6)
2
2
8 x  7 x  3
2
2
Review
4(5 x  7 y )
8
5
( x )( x )
(12 x)
2
20 x  28 y
13
x
12
144x
Around the World
•
•
•
•
Get out a piece of paper
Label it “Around the world”
Number each question 1-10
Show all of your work