Question 556158
a) (x-2)/(x+2) - x/(x-1)
= ((x-2)(x-1) - x(x+2))/((x+2)(x-1))
= (x^2 - 3x + 2 - x^2 - 2x)/((x+2)(x-1))
= (x+2)/((x+2)(x-1))
= {{{1/(x-1)}}}