The square of x plus the square of Y minus 8x minus 10Y plus 41 is equal to 0. Find the square of Y / x minus XY plus the square of X / y minus XY

The square of x plus the square of Y minus 8x minus 10Y plus 41 is equal to 0. Find the square of Y / x minus XY plus the square of X / y minus XY

The square of x plus the square of Y minus 8x minus 10Y plus 41 equals 0, so the square of (x-4) + the square of (Y-5) = 0
So x = 4, y = 5, so the square of Y / x minus XY plus the square of X / y minus XY, the answer is: - 37.7975