Factor the semiprime:
(In reply to re: Method?
by Brian Smith)
So perfect that I have little to add.
WolframAlpha (my free version, at least) will not factor the number, possibly for security reasons.
However, using the method you suggest it's easy to use successive approximations to generate the solution 'by hand' by examining the square root of the combined expression.
Posted by broll
on 2017-08-12 04:12:55