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Algebra 2
Section 4.4: Using Prime Factorization
Prime Numbers:
1
Algebra 2
Section 4.4: Using Prime Factorization
Prime Factorization:
Example: What is the prime factorization of 36?
Another way of finding
the Prime Factorization...
2
Algebra 2
Section 4.4: Using Prime Factorization
Greatest Common Factor: (GCF)
To find the GCF:
take the least power of each common factor
Example: Find the GCF of 20 and 28.
3
Algebra 2
Section 4.4: Using Prime Factorization
Least Common Multiple: (LCM)
To find the LCM:
take the greatest power of each factor
Example: Find the LCM of 20 and 28.
4
Algebra 2
Section 4.4: Using Prime Factorization
Example: Find the GCF and LCM of:
3 3
4
2 3
-32x y
120xy
42x y
You do not need to worry about the
negative in front...
Common Factors to Smallest Power
All Factors to Largest Power
5
Algebra 2
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