y/x-y + x/x³-2x²y+xy² + xy+y²/y²-x²y/x-y + x/x³-2x²y+xy² + xy+y²/y²-x² 注:/为分数线,旁边空了很多的是加减号,没空的是分子和分母的加减号
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/30 22:41:14
![y/x-y + x/x³-2x²y+xy² + xy+y²/y²-x²y/x-y + x/x³-2x²y+xy² + xy+y²/y²-x² 注:/为分数线,旁边空了很多的是加减号,没空的是分子和分母的加减号](/uploads/image/z/7165919-47-9.jpg?t=y%2Fx-y+%2B+x%2Fx%26%23179%3B-2x%26%23178%3By%2Bxy%26%23178%3B+%2B+xy%2By%26%23178%3B%2Fy%26%23178%3B-x%26%23178%3By%2Fx-y+%2B+x%2Fx%26%23179%3B-2x%26%23178%3By%2Bxy%26%23178%3B+%2B+xy%2By%26%23178%3B%2Fy%26%23178%3B-x%26%23178%3B+%E6%B3%A8%EF%BC%9A%2F%E4%B8%BA%E5%88%86%E6%95%B0%E7%BA%BF%2C%E6%97%81%E8%BE%B9%E7%A9%BA%E4%BA%86%E5%BE%88%E5%A4%9A%E7%9A%84%E6%98%AF%E5%8A%A0%E5%87%8F%E5%8F%B7%2C%E6%B2%A1%E7%A9%BA%E7%9A%84%E6%98%AF%E5%88%86%E5%AD%90%E5%92%8C%E5%88%86%E6%AF%8D%E7%9A%84%E5%8A%A0%E5%87%8F%E5%8F%B7)
y/x-y + x/x³-2x²y+xy² + xy+y²/y²-x²y/x-y + x/x³-2x²y+xy² + xy+y²/y²-x² 注:/为分数线,旁边空了很多的是加减号,没空的是分子和分母的加减号
y/x-y + x/x³-2x²y+xy² + xy+y²/y²-x²
y/x-y + x/x³-2x²y+xy² + xy+y²/y²-x²
注:/为分数线,旁边空了很多的是加减号,没空的是分子和分母的加减号
y/x-y + x/x³-2x²y+xy² + xy+y²/y²-x²y/x-y + x/x³-2x²y+xy² + xy+y²/y²-x² 注:/为分数线,旁边空了很多的是加减号,没空的是分子和分母的加减号
是化简吗?
由于x-y,x(三方)-2x(平方)+xy(平方),y(平方)-x(平方)为分母,所以它们不可为零,即可知x不等于y,且都不为零
将式子化简可得y/x-y + 1/x(平方)-2xy+y(平方) + y/y-x
=1/(x+y)(平方)
抱歉,我不会打平方三次方的数学形式,