(x1/x2-1) + (x2/x1-1)

x. 1/x.2-1 + x. 2/x.1-1
x/2x-1 + 2x/x-1
x(x-1)+(2x-1)/(2x-1).(x-1)
x^2-x+4x^2-2x/(2x-1)(x-1)
5x^2-3x/(2x-1)(x-1)

menurut aku bhtu
mdah mudahan bisa bntu