求墨迹部分是什么:(21x^4y³-墨迹+7x²y²)÷(-7x²y)=墨迹+5xy-y
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![求墨迹部分是什么:(21x^4y³-墨迹+7x²y²)÷(-7x²y)=墨迹+5xy-y](/uploads/image/z/3816103-31-3.jpg?t=%E6%B1%82%E5%A2%A8%E8%BF%B9%E9%83%A8%E5%88%86%E6%98%AF%E4%BB%80%E4%B9%88%EF%BC%9A%EF%BC%8821x%5E4y%26%23179%3B-%E5%A2%A8%E8%BF%B9%EF%BC%8B7x%26%23178%3By%26%23178%3B%EF%BC%89%C3%B7%EF%BC%88-7x%26%23178%3By%EF%BC%89%EF%BC%9D%E5%A2%A8%E8%BF%B9%EF%BC%8B5xy-y)
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求墨迹部分是什么:(21x^4y³-墨迹+7x²y²)÷(-7x²y)=墨迹+5xy-y
求墨迹部分是什么:(21x^4y³-墨迹+7x²y²)÷(-7x²y)=墨迹+5xy-y
求墨迹部分是什么:(21x^4y³-墨迹+7x²y²)÷(-7x²y)=墨迹+5xy-y
第一处:35x^3y^2
第二处:-3x^2y^2