[(x-3y)²-(x+3y)²]÷(-2xy)
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/30 23:07:15
![[(x-3y)²-(x+3y)²]÷(-2xy)](/uploads/image/z/3024014-14-4.jpg?t=%5B%28x-3y%29%26%23178%3B-%28x%2B3y%29%26%23178%3B%5D%C3%B7%28-2xy%29)
[(x-3y)²-(x+3y)²]÷(-2xy)
[(x-3y)²-(x+3y)²]÷(-2xy)
[(x-3y)²-(x+3y)²]÷(-2xy)
[(x-3y)²-(x+3y)²]÷(-2xy)
=[(x-3y)+(x+3y)][(x-3y)-(x+3y)]÷(-2xy)
=2x×(-6y)÷(-2xy)
=6
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来源:学生作业帮助网 编辑:作业帮 时间:2024/06/30 23:07:15
[(x-3y)²-(x+3y)²]÷(-2xy)
[(x-3y)²-(x+3y)²]÷(-2xy)
[(x-3y)²-(x+3y)²]÷(-2xy)
[(x-3y)²-(x+3y)²]÷(-2xy)
=[(x-3y)+(x+3y)][(x-3y)-(x+3y)]÷(-2xy)
=2x×(-6y)÷(-2xy)
=6