化简 4x

化简：[(x+2)/x-(x-1)/(x-2)]/[(x-4)/(x^2-4x+4)] 化简：x-2x+3x-4x+5x-.+2011x-2002x 化简:X-2X+3X-4X+5X-……+2001x-2002x [x^2+2x-8/x^3+2x^2+x]÷[(x-2/x)×(x+4/x+1)]化简[x^2+2x-8/x^3+2x^2+x]÷[(x-2/x)×(x+4/x+1)]化简 (x/x-2)+(2/x*2+2x)-(x+6/x*2-4)化简,=x^2/x(x-2)+(2x-4)/x(x^2-4)-(x^2+6x)/x(x^2-4)=x^2/x(x-2)-(x+2)/x(x-2)=(x-2)(x+1)/x(x-2)=(x+1)/x 化简 [3x/(x+2)-x/(x=2)]÷x/(x^2-4)化简 [3x/(x+2)-x/(x-2)]÷x/(x^2-4 3x/(x-2)-x/(x+2)÷2x/(x-4)化简3x/（x-2）-x/(x+2)÷2x/(x²-4)化简 化简【x-4】-【x-24】 化简:(x-1)(x+2)(x-3)(x+4)+24 化简 (x+1)(x+2)(x+3)(x+4)-8 化简：[x+1 -(15/x-1)] * (x-4/x-1) 化简9x-{4x-[5x-(8x-2)]} 化简[(x+2）/（x²-2x)+(x-1)/(x²-4x+4)]除以（x-4)/x 化简 [(x+2)/(x^2-2x)-(x-1)/(x^2-4x+4)]/[(x-4)/x]要求要过程. 化简:x平方-x-2/x平方-x-6除以x平方+4x-5/x平方+2x-10 化简:1/x(x+1)+1/(x+1)(x+2)+1/(x+2)(x+3)+1/(x+3)(x+4) 化简1/[x(x+2)]+1/[(x+1)(x+3)]+1/[(X+2)(X+4)].+1/[(X+9)(X+11)] 化简：[(x-4)/(x-2)]+[4/(x的平方-4x+4)]÷[x/x-2]