Download 2.1 Greatest Common Factor A. Definitions a)Factor to

2.1­ Greatest Common Factor
A. Definitions
a)Factor­ to factor a number, we must find numbers that multiply to give us the original number
b)Prime Number­ a number that cant be factored other than 1 and itself. ie: {2,3,5,7,11,13.......}
c)Greatest Common Factor­the largest factor that goes into both numbers or expressions
What is the B. Examples
G.C.F. of the 1) Factor 120 using prime numbers expressions?
120=2 2 2 3 5
2) Factor 16x3y4+4x2y6
8x2y4(2x+5y2)
3) Factor 12a3b4c5­15ab2c2­18a3b3c4
3ab2c2(4a2b2c3­5­6a2bc2)
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4) Factor ­20x +15x ­10x
#1­35
Your 2
Turn #3 ­5x(4x ­3x+2)
odd
on P.39
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