The general solution of the differential equation (2x - y + 1)dx + (2y - x + 1) dy = 0 is
x2 + y2 + xy - x + y = c
x2 + y2 - xy + x + y = c
x2 - y2 + xy - x + y = c
x2 - y2 - xy + x + y = c
B.
x2 + y2 - xy + x + y = c
Given differential equation is
(2x - y + 1)dx + (2y - x + 1) dy = 0
x2 + y2 - xy + x + y = c