1.-15=xy+y(y-1)/2*2-15=y(x+1)/22.57/5=x(1-y^3)/1-y57/5=x-27/5*y/1-y" /"都是分号的意思!“^3“是三次方1.-15=[xy+y(y-1)/2]×2-15=y(x+1)/22.57/5=x(1-y^3)/(1-y)57/5=x-27/5×y/(1-y)
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/04 18:45:04
![1.-15=xy+y(y-1)/2*2-15=y(x+1)/22.57/5=x(1-y^3)/1-y57/5=x-27/5*y/1-y](/uploads/image/z/9321693-69-3.jpg?t=1.-15%3Dxy%2By%28y-1%29%2F2%2A2-15%3Dy%28x%2B1%29%2F22.57%2F5%3Dx%281-y%5E3%29%2F1-y57%2F5%3Dx-27%2F5%2Ay%2F1-y%22+%2F%22%E9%83%BD%E6%98%AF%E5%88%86%E5%8F%B7%E7%9A%84%E6%84%8F%E6%80%9D%21%E2%80%9C%5E3%E2%80%9C%E6%98%AF%E4%B8%89%E6%AC%A1%E6%96%B91.-15%3D%5Bxy%2By%28y-1%29%2F2%5D%C3%972-15%3Dy%28x%2B1%29%2F22.57%2F5%3Dx%281-y%5E3%29%2F%281-y%2957%2F5%3Dx-27%2F5%C3%97y%2F%281-y%29)
1.-15=xy+y(y-1)/2*2-15=y(x+1)/22.57/5=x(1-y^3)/1-y57/5=x-27/5*y/1-y" /"都是分号的意思!“^3“是三次方1.-15=[xy+y(y-1)/2]×2-15=y(x+1)/22.57/5=x(1-y^3)/(1-y)57/5=x-27/5×y/(1-y)
1.-15=xy+y(y-1)/2*2
-15=y(x+1)/2
2.
57/5=x(1-y^3)/1-y
57/5=x-27/5*y/1-y
" /"都是分号的意思!
“^3“是三次方
1.-15=[xy+y(y-1)/2]×2
-15=y(x+1)/2
2.57/5=x(1-y^3)/(1-y)
57/5=x-27/5×y/(1-y)
1.-15=xy+y(y-1)/2*2-15=y(x+1)/22.57/5=x(1-y^3)/1-y57/5=x-27/5*y/1-y" /"都是分号的意思!“^3“是三次方1.-15=[xy+y(y-1)/2]×2-15=y(x+1)/22.57/5=x(1-y^3)/(1-y)57/5=x-27/5×y/(1-y)
请问题目是不是这样:
1.-15=[xy+y(y-1)/2]×2
-15=y(x+1)/2
2.57/5=x(1-y^3)/(1-y)
57/5=x-27/5×y/(1-y)
化简求值1.x^2+2xy+y^2/x^2-y^2除以x^2+xy/xy-y^2X=1Y=-2011
1.(xy-1)^2-(x+y-2xy)(2-x-y)2.(x+y)(x+y+2xy)+(xy-1)(xy+1)
若1/x-1/y=2,求3x-2xy-3y/x-xy-y的值3x-2xy-3y/x-xy-y 不好意思,是3x-2xy-3y/x-2xy-y
已知x+y=1,xy=-2,则x²y+xy²-2xy
xy^2-e^x+e^y=1 求y' 是xy^2 不是xy
1-2/x+y=xy,4y+6x=xy.求xy的解?
xy'+y=-xy^2的通解
x-2y=15,xy=-25,求x*x+4y*y-1
先化简,在求值1.x²-(x²+2xy-y²)+5(y²-3xy),其中x=1/17,y=1/3﹙2﹚5xy-[x²+2xy-2y²﹚],其中x=﹣2,y=﹣15xy-[x²+4xy-y²-(x²+2xy-2y²﹚],其中x=﹣2,y=﹣1
3X^2+XY+Y=15 求XY.
( )-(x^2+3xy)=-xy-1/3y^2
(x+2y-3xy)-(-2x-y+xy),其中x+y=1/2,xy=-1/2
因式分解(x+y-2xy)(x+y-2)+(xy-1)^2设x+y=a,xy=b,
已知3/(x-y)=1/xy 求(-x-2xy+y)/ (2x+3xy-2y)
已知xy-x-y=11,求(xy-1)^2+(x+y-2)(x+y-2xy)的值.
.(x+y-2)(x+y-2xy)+(xy-1)^2
已知xy/x+y=1/2,则代数式3x-5xy+3y/-x+3xy-y=
x+y=1,xy=-2求(x²+y²+xy)/(x²+y²-xy)