初二数学化简[（2x/x-4)-(1/x-2)]*(x+2)/(x-1)

[（2x/x-4)-(1/x-2)]*(x+2)/(x-1)
=[2x*(x-2)/(x-4)(x-2) - (x-4)/(x-4)(x-2)]*(x+2)/(x-1)
=[2x平方-4x-x+4/(x-4)(x-2)]*(x+2)/(x-1)
=(2x平方-5x+4)(x+2)/(x-4)(x-2)(x-1)

补充：题目数字没错吗？？(2x平方-5x+4)不能因式分解的哎！所以化简看上去一点也不简的嘛