已知x+y=2 xy=3 2[xy+(-3x)]-3(2y-xy)的运算过程和结果是什么
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![已知x+y=2 xy=3 2[xy+(-3x)]-3(2y-xy)的运算过程和结果是什么](/uploads/image/z/1248342-6-2.jpg?t=%E5%B7%B2%E7%9F%A5x%2By%3D2+xy%3D3+2%5Bxy%2B%28-3x%29%5D-3%282y-xy%29%E7%9A%84%E8%BF%90%E7%AE%97%E8%BF%87%E7%A8%8B%E5%92%8C%E7%BB%93%E6%9E%9C%E6%98%AF%E4%BB%80%E4%B9%88)
已知x+y=2 xy=3 2[xy+(-3x)]-3(2y-xy)的运算过程和结果是什么
已知x+y=2 xy=3 2[xy+(-3x)]-3(2y-xy)的运算过程和结果是什么
已知x+y=2 xy=3 2[xy+(-3x)]-3(2y-xy)的运算过程和结果是什么
2[xy+(-3x)]-3(2y-xy)=2xy-6x-6y+3xy=5xy-6(x+y)=3
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