so a^2 = ab
or a^2-b^2 = ab-b^2
or (a+b)(a-b) = b(a-b)
or a+b = b
now, putting the value of a,
Is Hall-Herault is single process or two different processes??
N.B.:- Refer Aluminium Extraction.
can you please provide the solution(proof) of the above sum?