Evaluate:
limx→1 [(x - 2)/(x2 - x) - 1/(x3 - 3x2 + 2x)]
[ (x - 2)/x(x - 1) - 1/x(x - 1)(x - 2) ]
= (x² - 4x + 4 - 1)/x(x - 1)(x - 2)
= (x² - 4x + 3)/x(x - 1)(x - 2)
⇒ limx→1 (x² - 4x + 3)/x(x - 1)(x - 2)
= limx→1 (x - 3)(x - 1)/x(x - 1)(x - 2)
= limx→1 (x - 3)/x(x - 2)
= (1 - 3)/1(1 - 2)
= 2