初二数学【【关于分式约分】】.追加====(1)1+2x/4x²+4x+1(2)x+xy/y²-1(3)4x-x²/16-x²(4)x²-y²/3x²+6xy+3y²
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![初二数学【【关于分式约分】】.追加====(1)1+2x/4x²+4x+1(2)x+xy/y²-1(3)4x-x²/16-x²(4)x²-y²/3x²+6xy+3y²](/uploads/image/z/609198-6-8.jpg?t=%E5%88%9D%E4%BA%8C%E6%95%B0%E5%AD%A6%E3%80%90%E3%80%90%E5%85%B3%E4%BA%8E%E5%88%86%E5%BC%8F%E7%BA%A6%E5%88%86%E3%80%91%E3%80%91.%E8%BF%BD%E5%8A%A0%3D%3D%3D%3D%281%EF%BC%891%2B2x%2F4x%26sup2%3B%2B4x%2B1%282%29x%2Bxy%2Fy%26sup2%3B-1%283%294x-x%26sup2%3B%2F16-x%26sup2%3B%284%29x%26sup2%3B-y%26sup2%3B%2F3x%26sup2%3B%2B6xy%2B3y%26sup2%3B)
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