This is a post mainly for me…. and a resource I wrote probably 5 years ago now.
I routinely want to use this resource and always have trouble finding it in my files so I hope that once it is up on here Google will be able to help me locate it in future!
As we all know when faced with a quadratic \(y = x^2+bx+c \) that has integer roots we can find the factors by looking for two numbers that multiply to give the value of \(c\) and add to give the value of \(b\). I often start this topic with getting students to complete a few of these kind of puzzles:
I’m not sure where I saw this idea originally – possibly Jo Morgan (@mathsjem) or Don Steward maybe.
Anyway if you fancy using my sheet with a lot of them download it here