Factoring GCF - (Greatest Common Factor)
Factor:
What are the factors of 20?
What are the factors of x?
What are the factors of 8z?
Prime Number:
Are the following numbers prime?
1=
2=
3=
4=
10 =
11 =
Greatest Common Factor (GCF):
What is the GCF of 42 and 30?
What is the GCF of 3y and 12y?
Factors of 42:
Factors of 30:
Factors of 3y:
Factors of 12y:
GCF =
GCF =
When factoring, your 1st Step is ALWAYS to ask yourself:
Ex1] Factor with GCF:
12 x  18 y
Is there a GCF to factor out?
What are the factors of 12x?
What are the factors of 18y?
GCF =
ANSWER:
Factor completely.
Example 2:
Example 3:
Example 4:
3 y 2  12
5n  n 2
21a 2  15ab
Example 5:
Example 6:
Example 7:
24 x  48 y
45m3  15m2
Example 8:
Example 9:
55 p 2  11 p7  44 p5
4 x  6 y  8xy
3c2 d  6c2 d 2