Gosh, i know the basic of exponentials, but when it contains some complex algebra stuff in there, i go blank.
I know to subtract the 10, but thats it...
(its e to the 2x power)
Thanks a bunch!
Do you mean "is there a harder way"? Of course, you don't have to replace , that's just the simplest thing to do. You could recognise that and then arguing that either or .
And how do I recognise that factoring? Well, I recognize as a "quadratic in " which is essentially replacing , at least in my head, by a single variable.