作业帮计算：(x^2y+xy^2)/(x+y)；(4a^2-12ab+9b^2)/(3b-2a)；(4x^2-6x^2y)/(2-3y)；[(x+3y)^2-4x^2]/(x+y).要有计算过程
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![计算：(x^2y+xy^2)/(x+y)；(4a^2-12ab+9b^2)/(3b-2a)；(4x^2-6x^2y)/(2-3y)；[(x+3y)^2-4x^2]/(x+y).要有计算过程](/uploads/image/z/1685925-45-5.jpg?t=%E8%AE%A1%E7%AE%97%EF%BC%9A%28x%5E2y%2Bxy%5E2%29%2F%28x%2By%29%EF%BC%9B%284a%5E2-12ab%2B9b%5E2%29%2F%283b-2a%29%EF%BC%9B%284x%5E2-6x%5E2y%29%2F%282-3y%29%EF%BC%9B%5B%28x%2B3y%29%5E2-4x%5E2%5D%2F%28x%2By%29.%E8%A6%81%E6%9C%89%E8%AE%A1%E7%AE%97%E8%BF%87%E7%A8%8B)
计算：(x^2y+xy^2)/(x+y)；(4a^2-12ab+9b^2)/(3b-2a)；(4x^2-6x^2y)/(2-3y)；[(x+3y)^2-4x^2]/(x+y).要有计算过程
计算：(x^2y+xy^2)/(x+y)；(4a^2-12ab+9b^2)/(3b-2a)；(4x^2-6x^2y)/(2-3y)；[(x+3y)^2-4x^2]/(x+y).
要有计算过程
计算：(x^2y+xy^2)/(x+y)；(4a^2-12ab+9b^2)/(3b-2a)；(4x^2-6x^2y)/(2-3y)；[(x+3y)^2-4x^2]/(x+y).要有计算过程
xy；-2a+3b；2x^2y；-3x+9