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I agree with you, in that you have fully factored the expression the only thing I can think of is perhaps indentifying (x^2 + 4) as the GCF
I think you did B...
well I'd expect you need to write it as (x^2 + 4)(3xy - 9y) does that make sense... or perhaps just your 1st line where you removed 3y
no i think thats part b pa\\part a is (x^2 +4)(3x - 9y)
i think she was right we did thid problem yesterday in class
Well for part a I still think the GCF is (x^2 + 4)
then the remaining unfactored part is (3xy - 9y) so use the first few lines of your solution