【½xy(x²+y)(x²-y)+3/2x²y的7次方÷3xy的4次方】÷(-1/8x的4次方y)
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![【½xy(x²+y)(x²-y)+3/2x²y的7次方÷3xy的4次方】÷(-1/8x的4次方y)](/uploads/image/z/1260443-11-3.jpg?t=%E3%80%90%26%23189%3Bxy%EF%BC%88x%26%23178%3B%2By%EF%BC%89%EF%BC%88x%26%23178%3B-y%EF%BC%89%2B3%2F2x%26%23178%3By%E7%9A%847%E6%AC%A1%E6%96%B9%C3%B73xy%E7%9A%844%E6%AC%A1%E6%96%B9%E3%80%91%C3%B7%EF%BC%88-1%2F8x%E7%9A%844%E6%AC%A1%E6%96%B9y%EF%BC%89)
【½xy(x²+y)(x²-y)+3/2x²y的7次方÷3xy的4次方】÷(-1/8x的4次方y)
【½xy(x²+y)(x²-y)+3/2x²y的7次方÷3xy的4次方】÷(-1/8x的4次方y)
【½xy(x²+y)(x²-y)+3/2x²y的7次方÷3xy的4次方】÷(-1/8x的4次方y)
[1/2xy*(x^4-y^2)+3/2x^2y^7÷3xy^4]÷[-1/8x^4y]
=[1/2x^5y-1/2xy^3+1/2xy^3]÷[-1/8x^4y]
=-4x^5y/x^4y
=-4x