2x+y=3,3x+2y=1【求X.Y】
来源:学生作业帮助网 编辑:作业帮 时间:2024/09/04 03:03:35
x)3Ю5165|0Ʀ
mI`Tգ\F0Iq!Wak
QԱh馶`l+ny>Ovjygv%H~qAbȍ / ^
若2/x-1/y=3,求[y/x-y/x-y(x-y/x-x+y)]/x-2y/x的值
(x-y)/(x+y)=3求( 3x-2y-1)/(x+y-5)
已知x-y/x+y=3,求代数式5(x-y)/x+y-x+y/2(x-y)
{(x+y)/2+(x-y)/3=1,(x+y)-5(x-y)=2.求x=?,y=?
已知:2x+y=6,x-3y=1 求7y(x-3y)(x-3y)-2(3y-x)(3y-x)
已知x-y=3,求[(x+y)(x-y)-(x-y)^2+2y(x-y)]除以的值
已知3x =2y 求x/x+y+y/x-y-y²/x²-y²
已知x-y=1,求[(x+2y)^2+(2x+y)(x-4y)-3(x+y)(x-y)]除以y的值大神们帮帮忙
已知x-y=1,求[(x+2y)²+(2x+y)(x-4y)-3(x+y)(x-y)]÷y的值
已知|x|=2,|y|=3,|x+y|=-(x+y)求x-y
y=3(x-y),x=2(x-y)求x,y的值
1奥数题x-2y/x+2y=3,求x-2y/3(x+2y)-3(x-2y)/x-2y的差
分式加减的几道题目求速度1 .(x+y)²/(x-z)(y-z) - (y+z)²/(x-z)(y-z) = 2.2x+3y/x-y+2y/y-x-3y/x-y=
x+y/2+ x-y/2=6 2(x+y)-3x+3y=24 求X Y
已知2y-x=-3,求[4y(2x-y)-2x(2x-y)]/(2x-y
x*y=6x-y=1求X Y是多少?X=3 Y=2 求公式!
求导数y=3x-x^2 求y',y'/ x=1 y'/x=0
已知2x-y=0,求分式【1+(3*y*y*y/x*x*x-y*y*y)】/【1+(2y/x-y)】的值注:x*x*x-y*y*y=(x-y)*(x*x+xy+y*y)