Сократите:
x^2 - 3x + 2
_________
2x^2 - 2

(x-2)(x-1)=x²-3x+2
2x² -2 =2(x² -1) =2(x -1)(x +1)

(x -2)(x -1) /2(x -1)(x +1) = (x-2) /2(x +1)