T IC -T AC -T OE F ACTORING Presented by: Jennifer Morgan and Christina Guynes Grady ISD Kermit ISD.
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TIC-TAC-TOE FACTORING Presented by: Jennifer Morgan and Christina Guynes Grady ISD Kermit ISD
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Transcript of T IC -T AC -T OE F ACTORING Presented by: Jennifer Morgan and Christina Guynes Grady ISD Kermit ISD.
TIC-TAC-TOE FACTORINGPresented by:
Jennifer Morgan and Christina Guynes
Grady ISD Kermit ISD
DAY ONE – FACTOR TABLES
Find the pair of numbers that will multiply to make the bottom number and add to give you the top number.
7
12
9
20
10
24
3
4 4
6
5
4
FACTOR TABLES…
-5
-24
-3
-28
-25
84
40
144
3
-8
-4
-21
36
4
-7
4
TIC-TAC-TOE METHOD
372 2 xx
2 3 6
611 1
2 3x
x)3)(12( xx
First term goes here
Third term goes here
Multiply across to get this number
What factors of 6 will add to
get 7?
Factors must multiply across to
last number
Fact
ors
mult
iply
up t
o t
op n
um
ber
X’s go in the first
column
Factors come from
the diagonals
5163 2 nn
3 5 15
15
11 13 5
n
n
)5)(13( nn
First term goes here
Third term goes here
Multiply across to get this number
What factors of 15 will add to
get 16?
Factors must multiply across to
last number
Fact
ors
mult
iply
up t
o t
op n
um
ber
n’s go in the first
column Factors come from
the diagonals
1073 2 xx
3 -10
-30
What factors of 30 will
subtract to get 7?
103-
Negatives transfer to
middle column
Does 3 go into
10 evenly?
No, so put a 1 in this place. 3
11
10x
x
)1)(103( xx
-
Which factor needs to be negative to
get a positive 7?
1544 2 xx
4 -15
-60
What factors of 60 will
subtract to get 4?
Factors of 60
1 * 602 * 303 * 204 * 155 * 126 * 10
6-
10Negatives transfer to
middle column
-
Start with the 4. It can’t go
into either 6 or 10
evenly, so we have to split it
to 2 and 2. 22
35
x
x
)32)(52( xx
8179 2 xx
9 8 72
What factors of 72 will add
to get 17?
Factors of 721 * 722 * 363 * 244 * 186 * 128 * 9
-8-9
--8
91
1
x
x
)1)(89( xx
8184 2 xx
If the trinomial has a GCF, it needs to be
removed first!)492(2 2 xx
2 4 8What factors of 8 will add
to get 9?
-8
-1-
-112 4
x
x
)4)(12(2 xxDo NOT forget the 2 you pulled out at the beginning!
22 5112 yxyx
2 5 10
-10
-1-
112 5
x
x
)5)(2( yxyx
y
yY’s go in the
second column
-
22 823 yxyx
3 -8
-24
Factors of 241 * 242 * 123 * 84 * 6-
46-
31 4
2
x
x
y
y
)2)(43( yxyx
