5合并同类项练习题,共5题,①求k为何值时,代数式x²-3kxy-3y²-1/3xy-8中不含xy的项.②说明代数式与3/2a²bc-3ab²-3/2a²bc+4ab²的值与c的取值无关.③已知2x²+xy=10,3y²+2xy=6,求4x
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![5合并同类项练习题,共5题,①求k为何值时,代数式x²-3kxy-3y²-1/3xy-8中不含xy的项.②说明代数式与3/2a²bc-3ab²-3/2a²bc+4ab²的值与c的取值无关.③已知2x²+xy=10,3y²+2xy=6,求4x](/uploads/image/z/6950807-71-7.jpg?t=5%E5%90%88%E5%B9%B6%E5%90%8C%E7%B1%BB%E9%A1%B9%E7%BB%83%E4%B9%A0%E9%A2%98%2C%E5%85%B15%E9%A2%98%2C%E2%91%A0%E6%B1%82k%E4%B8%BA%E4%BD%95%E5%80%BC%E6%97%B6%2C%E4%BB%A3%E6%95%B0%E5%BC%8Fx%26%23178%3B-3kxy-3y%26%23178%3B-1%2F3xy-8%E4%B8%AD%E4%B8%8D%E5%90%ABxy%E7%9A%84%E9%A1%B9.%E2%91%A1%E8%AF%B4%E6%98%8E%E4%BB%A3%E6%95%B0%E5%BC%8F%E4%B8%8E3%2F2a%26%23178%3Bbc-3ab%26%23178%3B-3%2F2a%26%23178%3Bbc%2B4ab%26%23178%3B%E7%9A%84%E5%80%BC%E4%B8%8Ec%E7%9A%84%E5%8F%96%E5%80%BC%E6%97%A0%E5%85%B3.%E2%91%A2%E5%B7%B2%E7%9F%A52x%26%23178%3B%2Bxy%3D10%2C3y%26%23178%3B%2B2xy%3D6%2C%E6%B1%824x%26%2317)
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