化简:(2x/x-1)-(x/x+1)÷(x/x²-1)
问题描述:
化简:(2x/x-1)-(x/x+1)÷(x/x²-1)
答
2x/(x-1)-[x/(x+1)]*[(x+1)(x-1)/x]
=2x/(x-1)-(x-1)=[2x-(x-1)^2]/(x-1)=(x^-4x+1)/(1-x)应该是最简了