View Single Post
Old 2020-10-22, 11:37   #6
Dr Sardonicus
Dr Sardonicus's Avatar
Feb 2017

25×139 Posts

Yes, substituting x for 7! does make things much easier to handle. The obvious regrouping of the first part of the expression gives


The "obvious" multiplication then gives 2\sqrt{x+1}.

I note that things can go wrong for complex values of "x" that aren't positive real numbers.
Dr Sardonicus is offline   Reply With Quote