SOLUTION: Find the greatest common factor for the list of terms. a^4b, -ab^3

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Question 971788: Find the greatest common factor for the list of terms. a^4b, -ab^3
Answer by Alan3354(69443) About Me  (Show Source):
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Find the greatest common factor for the list of terms. a^4b, -ab^3
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Both have an a term
--> a* [a^3b, -b^3]
both in [ ] have a b term
--> ab* [a^3, -b^2]
No common terms in [ ]
GCF = ab