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What is GCF?
The largest factor that two or more numbers have in common.
GCF of 5 and 15
5
GCF of 9 and 12
3
GCF of 32 and 8
8
6m
monomial
GCF of 3, 12 and 18
3
GCF of 8, 12, 16
4
GCF of 20 and 5
5
GCF 2 and 8
2
2m - 1
binomial
GCF of 16 and 32?
GCF = 16
GCF of 81 and 45
9
Find the GCF:
( 3x , 12 x2 )
3x
Factor by GCF:
18 x - 6 x2
6x ( 3 - 1x )
39
constant
GCF of 21 and 63?
GCF = 21
Distribute 5(-2x-6)
-10x-30
Factor: 16x + 8x2
8x (2 + x)
Factor: 10x2 - 45x
5 x ( 2 x - 9 )
9m^2 - 2m + 12
trinomial
Use the distributive property -3x (2x + 6)
-6x^2 - 18x
GCF of 72 and 88?
GCF = 8
GCF of 30 and 75
GCF = 15
GCF of 35 and 63?
GCF = 7
8x^3 - 2x
cubic