求解(x²-4/x²-4x+4 +2-x/x+2）除以x/x-2等于多少
2-x分之x+2如何转化
人气：383 ℃ 时间：2020-02-03 16:28:13
解答
[(x²-4)/(x²-4x+4) +(2-x)/(x+2)]/[x/(x-2)]=[(x+2)(x-2)/(x-2)² -(x-2)/(x+2)]/[x/(x-2)]=[(x+2)/(x-2)-(x-2)/(x+2)]/[x/(x-2)]=[(x+2)²-(x-2)²](x-2)/[x(x-2)(x+2)]=8x(x-2)/[x(x-2)(x+2...
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