来自刘添添的问题
已知3x-y=0,求(1+2y^2/x2-y2)/(1+2y/x-y)
已知3x-y=0,求(1+2y^2/x2-y2)/(1+2y/x-y)
1回答
2020-08-06 21:13
已知3x-y=0,求(1+2y^2/x2-y2)/(1+2y/x-y)
已知3x-y=0,求(1+2y^2/x2-y2)/(1+2y/x-y)
由3x-y=0得
y=3x
再代入里面
(1+2y^2/x2-y2)/(1+2y/x-y)最后约分