化简分式:(x-3)(x²-4)/(x²+3x+2)(x²-4x+3)

问题描述:

化简分式:(x-3)(x²-4)/(x²+3x+2)(x²-4x+3)

=(X-3)(X+2)(X-2)/(X+1)(X+2)(X-1)(X-3)
约去相同的=(X-2)/(X+1)(X-1)