化简:(x²+xy/xy - x-y/y)·x²

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化简:(x²+xy/xy - x-y/y)·x²
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化简:(x²+xy/xy - x-y/y)·x²
化简:(x²+xy/xy - x-y/y)·x²

化简:(x²+xy/xy - x-y/y)·x²
题目有的模糊