计算题……帮忙算算~……………………急用
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计算题……帮忙算算~……………………急用
计算:1.(a^2-4)/(a^2+4a+4)*2a/(a^2-4a+4)
2.(x^2y-x^3/x^2+2xy+y^2)/(x/x-y)*(x+y/x^2-2xy+y^2)
3.(x/(x-y)-x^2/(x^2-2xy+y^2))/(x/(x+y)-x^2/(x^2-y^2))
4.(x^2-x-2/(x^2-4x+4)-x/x^2-2x)*(x-4/x)
计算:1.(a^2-4)/(a^2+4a+4)*2a/(a^2-4a+4)
2.(x^2y-x^3/x^2+2xy+y^2)/(x/x-y)*(x+y/x^2-2xy+y^2)
3.(x/(x-y)-x^2/(x^2-2xy+y^2))/(x/(x+y)-x^2/(x^2-y^2))
4.(x^2-x-2/(x^2-4x+4)-x/x^2-2x)*(x-4/x)
![计算题……帮忙算算~……………………急用](/uploads/image/z/4251366-54-6.jpg?t=%E8%AE%A1%E7%AE%97%E9%A2%98%E2%80%A6%E2%80%A6%E5%B8%AE%E5%BF%99%E7%AE%97%E7%AE%97%7E%E2%80%A6%E2%80%A6%E2%80%A6%E2%80%A6%E2%80%A6%E2%80%A6%E2%80%A6%E2%80%A6%E6%80%A5%E7%94%A8)
1.2a/(a^2-4)