7x-3y/5=5x-y/3-x+y/2 { x-1/5=y+1/3具体题目是这样.谢谢
来源:学生作业帮助网 编辑:作业帮 时间:2024/10/14 18:41:24
x1N1E0k{ב=p h@
"R]d ^w"tX.f|Pg^:lAd1އiv[&;1]{pQUNOJ]3rTms-Weܦ+30N"',&HM Sq|~9JGc$ !כ"0eo;8P"5w%+F|5
已知x-y/x+y=3,求代数式5(x-y)/x+y-x+y/2(x-y)
(x+y-5)*(x+y-5)+(x-y+3)=0 x*x-y*y
已知:3x-5y=0,求x/y,x-y/y,x-y/x
3x+5y-(x+y)=6 2(x+y)-3x=-7
化简:3(x-y)²-7(x-y)+ 2(x-y)²+5(x-y)
x+y/2+x-y/6=5 2(x+y)-3(x-y)=-2
(x-y)/(x+y)=3求( 3x-2y-1)/(x+y-5)
3(x+y)+2(x-y)=36 4(x+y)-5(x-y)=2
4(x-y)-3(x-y)=9 5(x-y)+2(x-y)=11
3(x+y)-4(x-y)=11,2(x-y)+5(x+y)=27
6(x-y)-2(x+y)=14 3(x-y)+(x+y)=5
x+y=1 5x-2y=8 3x-y=7 2x-y=3x表示y和用y表示x
计算(x^8-x^7y+x^5y^3-x^4y^4+x^3y^5-x^y^7+y^8)(x^2+xy+y^2)
化简:5(x-y)+2(x+y)-3(x-y)
先化简再求值(x-y)(x-2y)+(x-2y)(x-3y)-2(x-3y)(x-4y) x=4 y=5
{(x+y)/2+(x-y)/3=1,(x+y)-5(x-y)=2.求x=?,y=?
把(x-y)看作一个整体,化解:5(x-y)+2(x-y)-4(x-y)= 3(x-y)把(x-y)看作一个整体,化解:5(x-y)+2(x-y)-4(x-y)=3(x-y)²-4(x-y)+7(x-y)-6(x-y)²=
(2x-3y)-(5x-y)