(x-y+(4xy)/(x-y))*(x+y-(4xy)/(x+y)) 请问化简结果是多少?
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(x-y+(4xy)/(x-y))*(x+y-(4xy)/(x+y)) 请问化简结果是多少?
谢谢heyinbu
但是希望可以有解题过程
谢谢heyinbu
但是希望可以有解题过程
![(x-y+(4xy)/(x-y))*(x+y-(4xy)/(x+y)) 请问化简结果是多少?](/uploads/image/z/19428989-5-9.jpg?t=%28x-y%2B%284xy%29%2F%28x-y%29%29%2A%28x%2By-%284xy%29%2F%28x%2By%29%29+%E8%AF%B7%E9%97%AE%E5%8C%96%E7%AE%80%E7%BB%93%E6%9E%9C%E6%98%AF%E5%A4%9A%E5%B0%91%3F)
结果为x平方-y平方
式子第一个括号内:通分得到(x^2+y^2+2xy)/(x-y)
=(x+y)^2/(x-y)
第二个括号:类似可得(x-y)^2/(x+y)
两个括号相乘,就得到我的结果
式子第一个括号内:通分得到(x^2+y^2+2xy)/(x-y)
=(x+y)^2/(x-y)
第二个括号:类似可得(x-y)^2/(x+y)
两个括号相乘,就得到我的结果
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