1.x为何值时,分式1/x^2-3x+2有意义2.若x,y的值扩大为原来的3倍,下列分式的值如何变化?(1)x^2+y^2/x^2-y^2 (2)2x^3/3y^3 (3)x^2-y^2/3xy3.计算(1)(2x^2)/(x-y) -x+y喂……过程我要我要……
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![1.x为何值时,分式1/x^2-3x+2有意义2.若x,y的值扩大为原来的3倍,下列分式的值如何变化?(1)x^2+y^2/x^2-y^2 (2)2x^3/3y^3 (3)x^2-y^2/3xy3.计算(1)(2x^2)/(x-y) -x+y喂……过程我要我要……](/uploads/image/z/3791972-20-2.jpg?t=1.x%E4%B8%BA%E4%BD%95%E5%80%BC%E6%97%B6%2C%E5%88%86%E5%BC%8F1%2Fx%5E2-3x%2B2%E6%9C%89%E6%84%8F%E4%B9%892.%E8%8B%A5x%2Cy%E7%9A%84%E5%80%BC%E6%89%A9%E5%A4%A7%E4%B8%BA%E5%8E%9F%E6%9D%A5%E7%9A%843%E5%80%8D%2C%E4%B8%8B%E5%88%97%E5%88%86%E5%BC%8F%E7%9A%84%E5%80%BC%E5%A6%82%E4%BD%95%E5%8F%98%E5%8C%96%3F%281%29x%5E2%2By%5E2%2Fx%5E2-y%5E2+%282%292x%5E3%2F3y%5E3+%283%29x%5E2-y%5E2%2F3xy3.%E8%AE%A1%E7%AE%97%281%29%282x%5E2%29%2F%28x-y%29+-x%2By%E5%96%82%E2%80%A6%E2%80%A6%E8%BF%87%E7%A8%8B%E6%88%91%E8%A6%81%E6%88%91%E8%A6%81%E2%80%A6%E2%80%A6)
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