(x-x²-1/1-x)·x²-2x+1/x²-x+1
=(x-x²-1/x²-x+1)·x²-2x+1/(1-x)
=-1*(1-x)
=x-1
(x-x²-1/1-x)·x²-2x+1/x²-x+1
(x-x²-1/1-x)·x²-2x+1/x²-x+1
求值.(x-x²-1/1-x)·x²-2x+1/x²-x+1
求值.(x-x²-1/1-x)·x²-2x+1/x²-x+1
数学人气:697 ℃时间:2020-01-30 14:51:16
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