/>[(x^2-x)/(x^2-2x+1)]-[x/(x+1)]
=[x(x-1)/(x-1)²]-[x/(x+1)]
=x/(x-1)-x/(x+1)
=x[1/(x-1)-1/(x+1)]
=x[(x+1-x+1)/(x-1)(x+1)]
=x[2/(x²-1)]
=2x/(x²-1)]
=2√2/(2-1)
=2√2
/>[(x^2-x)/(x^2-2x+1)]-[x/(x+1)]
=[x(x-1)/(x-1)²]-[x/(x+1)]
=x/(x-1)-x/(x+1)
=x[1/(x-1)-1/(x+1)]
=x[(x+1-x+1)/(x-1)(x+1)]
=x[2/(x²-1)]
=2x/(x²-1)]
=2√2/(2-1)
=2√2