我算了很长时间,似乎算不出来当x=-2,y=3时,求kx-2(x-1/3y^2)+(-3/2x+1/3y^2)的值.一名同学在做题时,错把x=-2看成x=2但结果也正确,且计算过程无误,求k的值
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![我算了很长时间,似乎算不出来当x=-2,y=3时,求kx-2(x-1/3y^2)+(-3/2x+1/3y^2)的值.一名同学在做题时,错把x=-2看成x=2但结果也正确,且计算过程无误,求k的值](/uploads/image/z/1526293-37-3.jpg?t=%E6%88%91%E7%AE%97%E4%BA%86%E5%BE%88%E9%95%BF%E6%97%B6%E9%97%B4%2C%E4%BC%BC%E4%B9%8E%E7%AE%97%E4%B8%8D%E5%87%BA%E6%9D%A5%E5%BD%93x%3D-2%2Cy%3D3%E6%97%B6%2C%E6%B1%82kx-2%28x-1%2F3y%5E2%29%2B%28-3%2F2x%2B1%2F3y%5E2%29%E7%9A%84%E5%80%BC.%E4%B8%80%E5%90%8D%E5%90%8C%E5%AD%A6%E5%9C%A8%E5%81%9A%E9%A2%98%E6%97%B6%2C%E9%94%99%E6%8A%8Ax%3D-2%E7%9C%8B%E6%88%90x%3D2%E4%BD%86%E7%BB%93%E6%9E%9C%E4%B9%9F%E6%AD%A3%E7%A1%AE%2C%E4%B8%94%E8%AE%A1%E7%AE%97%E8%BF%87%E7%A8%8B%E6%97%A0%E8%AF%AF%2C%E6%B1%82k%E7%9A%84%E5%80%BC)
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