Help Factoring Polynomials in Pre-calc/Algebra2
Hi Khan community, I'm currently in Pre-calc, but I think this is just another Algebra skill I forgot how to do. I can't seem to find good explanations on how to do the specific factoring problems I need to solve. My class notes (which I conveniently missed) explain that we're supposed to use any of these methods to factor: GFC and Distributive, Difference of Squares, Trinomial with Coefficient = 1, Trinomial with Coefficient > 1.
My teacher (whom I cannot understand) has also been talking about using the box/area method along with something called "synthetic" division... Can anyone explain how to do the following problems, preferably without any boxes (long story)? Or if there is a section of videos I missed about these the links to those would suffice as well. Here are a couple of examples from my worksheet:
1: -42c^5 -49c^4 +14c^3
This one I got down to 7c^3(-6c^2-7c+2) but I'm not sure where to go from here.
2: 7xy^2 +14xy -28x
Here I factored out 7x and got the quadratic y^2+2y-4. Do I keep factoring with the quadratic formula or leave it as is?
I don't necessarily need the answers themselves, by the way, I really just want to know how I should go about factoring more complex polynomials. Thank you! :)
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