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Let a=b 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, b ...

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?

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