问题 计算题

计算:[(x+y)2﹣y(2x+y)﹣8x]÷2x.

答案

解:[(x+y)2﹣y(2x+y)﹣8x]÷2x

=(x2+2xy+y2﹣2xy﹣y2﹣8x)÷2x

=(x2﹣8x)÷2x

=﹣4.

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