Question 1208131
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After manipulations of other tutors, the problem's formulation/description
disappeared, by some mysterious way.


So, I do not know what the original description is - I only may guess about it.


But I see that the answers of the two tutors, @josgarithmetic  {{{(4x^2+(10-4x)^2)/4}}}

and @timofer  {{{x^2+(1/(4pi))(10-4x)^2}}},  are mathematically different and are NOT mathematically compatible each with the other.


Based on my guessing about the original problem's formulation, I think that the solution and 
the answer by @timofer is correct, while the answer by @josgarithmetic is wrong.
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