Simplify 25a³b - 10a²b³ + 19b² -10a³b + 30a²b³ - 29b² and factor.
I got 5b( 3a^3 - 2b + 4a^2b)
But how do I find the GFC?
Hmm. I get
5b( 3a^3 - 2b + 4a^2b^2)
Other than that, I see no useful factorizations.
Who said anything about a GCF? You need at least two expressions to have a "common" factor...