(x-y+(4xy)/(x-y))*(x+y-(4

(x-y+(4xy)/(x-y))*(x+y-(4xy)/(x+y)) 请问化简结果是多少?

1个回答

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