1.若多项式2x²+3x+7的值为10,则多项式的6x²+9x-7的值为多少?2.如果/y-3/+(2x-4)²=0 求2x-y的值打得好的追分急.....
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![1.若多项式2x²+3x+7的值为10,则多项式的6x²+9x-7的值为多少?2.如果/y-3/+(2x-4)²=0 求2x-y的值打得好的追分急.....](/uploads/image/z/7624123-43-3.jpg?t=1.%E8%8B%A5%E5%A4%9A%E9%A1%B9%E5%BC%8F2x%26%23178%3B%2B3x%2B7%E7%9A%84%E5%80%BC%E4%B8%BA10%2C%E5%88%99%E5%A4%9A%E9%A1%B9%E5%BC%8F%E7%9A%846x%26%23178%3B%2B9x-7%E7%9A%84%E5%80%BC%E4%B8%BA%E5%A4%9A%E5%B0%91%3F2.%E5%A6%82%E6%9E%9C%2Fy-3%2F%2B%EF%BC%882x-4%EF%BC%89%26%23178%3B%3D0+%E6%B1%822x-y%E7%9A%84%E5%80%BC%E6%89%93%E5%BE%97%E5%A5%BD%E7%9A%84%E8%BF%BD%E5%88%86%E6%80%A5%EF%BC%8E%EF%BC%8E%EF%BC%8E%EF%BC%8E%EF%BC%8E)
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