【分式的加减】几道计算题(带过程)
(1)(1/x)-(1/x+1)=
(2)(x/x-2)-(8/x²-4)=
(3)(x/x+1)-(1/x-1)-(2/x²-1)=
(4)(1/x+1/y)²-(1/x-1/y)²=
(5)(x-1/x²-3x+2)-(x+2/x²+3x+2)=
(6)【(x²-4/x²-x-6)-(x+2/x-3)】÷(4/x-3)=