How do i complete the square for this equation? x^2 + 8x+y^2-2y=64

Simplifying x2 + 8x + y2 + - 2y = 64

Reorder the terms: 8x + x2 + - 2y + y2 = 64 Solving 8x + x2 + - 2y + y2 = 64 Solving for variable 'x'.

Reorder the terms: - 64 + 8x + x2 + - 2y + y2 = 64 + - 64

Combine like terms: 64 + - 64 = 0 - 64 + 8x + x2 + - 2y + y2 = 0

The solution to this equation could not be determined.