Let \(x\) and \(y\) be real numbers such that \(2(x^2 + y^2) = x + y \). Find the maximum value of \(x-y\).
By symmetry, you get the maximum when x = y = 1/2, so the maximum value is x - y = 0.
No, but the answer is to be a fraction so 0 is wrong.
+143 
