SOLUTION: Find the greatest common factor and factor it out of the expression. 3x^5y^2-21x^2y^7

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Question 888545: Find the greatest common factor and factor it out of the expression.
3x^5y^2-21x^2y^7
Answer by Edwin McCravy(20059)   (Show Source): You can put this solution on YOUR website!


Look for a number.

3 is the largest common factor of 3 and 21, so we take out 3

Now look for letters.

x and y appear in both terms, and the LARGEST power we can take
out is the SMALLEST power that appears, which is  and 

So we take out the GCF, which is 



Edwin
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