Ah, ok. I signed up for MOAA and AMC 8 and I'm trying to go through as many modules as I can, so some days I'll be doing something and some days I'll be doing the other.
Great question! The trick really only works as long as
... like you could try writing 62 and 64 as 60+2 and 60+4, but when you multiply them the terms won't add and cancel nicely like they did in Prof. Loh's explanation.
I hope that made sense to you; if it didn't I'd be happy to clarify.
This trick is slightly related to Difference of Squares, but also very different. It does not actually currently have a name... so I guess you could call it Prof. Loh's Trick.
@smartlion I've been told by our website host that this issue has been fixed now. Thank you for your help with this, and sorry for the trouble!
Finding the Unknown