Factoring Cubic Polynomials with only 3 terms

[MoronPipllyd]

Hola, my C1 exam is tomorrow morning so I'm sorta cramming atm and the last thing on my 'I have no idea what I'm doing list' is Solving / factoring Polynomial equations that are missing an x coefficient. Here's an example of a question that's tripping me:

Source

This is different to the more usual question:

Source


Anyone have any useful resources that could help me out? Or can anyone help me out?

 

[RIP - DAVE DAVIDSON]

I used mymaths a lot in secondary school. If I still did math's I'd be able to solve that lool.

 

[Ash]

http://www.wtamu.edu/academic/anns/mps/math/mathlab/col_algebra/col_alg_tut18_polyeq.htm

http://www.mesacc.edu/~scotz47781/mat120/notes/factoring/solving_by/polynomials/polynomials.html

 

[MattIs]

There's a really nice easy way of doing it.
We call it the Asian method as no teacher will show you this method.
You're welcome buddy

Just watch it. It's only 3 minutes. This guy works on it new methods to solve stuff and it makes it 20000 times easier

 

[Andoyan]

Sorry man cant help you i get headache when i see your equations. Tbh it mindfucks me

 

[Bamarin [IT]]

Can i ask you 1 thing? everyone of your same age in UK as the same kind of exams?
I was a bit impressed since in Italy who choose a school where math is not the most first subject, but neither the last one, can solve those exercise at the age of 15-16. Don't even think I think you are stupid

Btw there's an Italian mathematician who will help you a lot whit equations higher then 2nd degree (x^3, x^4 or higher) not separable by taking apart a factor, he's called Ruffini.
I don't know how to explain you his method without a sheet and a pen, try googling it

I hope this will help you if you don't find anything usefull tell me and i'll send you some screenshots to try to explain it by myself