Friday, 15 April 2016

algebra precalculus - Solve ......................................................................



This is the question



This is the answer




This is what I did
Hate to type hence this



Can anyone tell me what's wrong me or the question?


Answer



You did the case y=4x, and got answers x=1 and x=94. Neither is a solution of the original equation. It is easy to verify that when y=4x we have xyyx=32.



When you squared, you introduced extraneous roots. Only x=4y leads to a solution of the system.


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