已知x/y=3,求(x^2+2xy-3y^2)/(x^2-xy+y^2)的值.
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/18 19:05:25
![已知x/y=3,求(x^2+2xy-3y^2)/(x^2-xy+y^2)的值.](/uploads/image/z/15226538-50-8.jpg?t=%E5%B7%B2%E7%9F%A5x%2Fy%3D3%2C%E6%B1%82%28x%5E2%2B2xy-3y%5E2%29%2F%28x%5E2-xy%2By%5E2%29%E7%9A%84%E5%80%BC.)
x){}K++mumlҨ3653qu+*AZ6ѳI*'C~
Cmx|˅;ux1ƕާ;=m]tƧ^|]dW~qAb6` =Ϧo{9sɓ
Ov3z1ECkDr
已知x/y=3,求(x^2+2xy-3y^2)/(x^2-xy+y^2)的值.
已知x/y=3,求(x^2+2xy-3y^2)/(x^2-xy+y^2)的值.
已知x/y=3,求(x^2+2xy-3y^2)/(x^2-xy+y^2)的值.
12/7
先移项,变成x=3y
再带入就可以算出来了
同时除一个Y^2或者X^2
已知X+Y=3XY,求2X+2Y-XY除以X+Y+2XY的值,要算理.已知X+Y=3XY,求2X+2Y-XY除以X+Y+2XY的值,要算理.
已知:x/y=-2,求x^2-2xy-3y^2/x^-6xy
已知xy/x+y=3,求2x-3xy+2y/-x+3xy-y的值
已知xy/x+y=3,求2x-3xy+2y/-x+3xy-y的值
已知x-y=3xy,求分式3x+2xy-3y/x-2xy-y的值
已知xy=-2,x-y=3,求(x+y)(x-y)-y^2+(x-y)^2-(6x^2y-2xy^2)÷2y
已知y=3xy+x,求代数式2x+3xy-2y/x-2xy-y的值
已知x-y/xy=3,求分式2x+3xy-2y/x-2xy-y的值.
已知3/(x-y)=1/xy 求(-x-2xy+y)/ (2x+3xy-2y)
已知x-y=3xy,求2x+3xy-2y/x-2xy-y
已知x-y=3xy,求2x-3xy-2y/x-2xy-y
已知y=3xy+x,求代数式2x+3xy-2y/x-2xy-y的值
已知xy/x+y=3,求代数式2x-5xy+2y/x-3xy+y
已知3x=xy+3y,求2x+xy-2y/y-x-xy的值
已知xy/x+y=2,求代数式3x-5xy+3y/-x+2xy-y的值
已知xy/x+y=2,求代数式3x-xy+3y/-x+3xy-y的值
已知xy/x+y=6,求3x-2xy+3y/-x+3xy-y的值.
已知(xy)/(x+y)=6求(3x-2xy+3y)/(-x+3xy-y)的值.