x+1分之3-x的平方-x-2分之x=x的平方-3x+2分之2x要详细过程

2024-12-29 10:24:50
推荐回答(1个)
回答1:

3/x+1 - x/x²-x-2 = 2x/x²-3x+2
3/x+1 - x/(x+1)(x-2) =2x/(x-2)(x-1)
3(x-2)(x-1)/(x+1)(x-2)(x-1) - x(x-1)/(x-2)(x-1)(x+1) = 2x(x+1)/(x-2)(x-1)(x+1)
3(x-2)(x-1) - x(x-1) = 2x(x+1)
3x²-9x+6 -x²+x =2x²+2x
10x=6
x=0.6