X³-X²/X²-X + 1-X²/X+1 - X+2/X²-4
=x2(x-1)/x(x-1)+(1-x)(1+x)/(x+1)-(x+2)/(x+2)(x-2)
=x+(1-x)-1/(x-2)
=1-1/(x-2)
(x-3)/(x-2)
X³-X²/X²-X + 1-X²/X+1 - X+2/X²-4 求计算过程
X³-X²/X²-X + 1-X²/X+1 - X+2/X²-4 求计算过程
数学人气:346 ℃时间:2019-11-14 13:01:54
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