已知(X+3)^2+|y+6|=02(3x-3y)-4(x-y)-2(x-y)
来源:学生作业帮助网 编辑:作业帮 时间:2024/11/24 09:25:25
x){}K5"5㌴k*jl
4+t+5uM4*tI*'I~
6XLkT u)[Xkuul@i[BVXV.Dpkk"akk$k9<ʴ/.H̳y Մm2
已知(X+3)^2+|y+6|=02(3x-3y)-4(x-y)-2(x-y)
已知(X+3)^2+|y+6|=02(3x-3y)-4(x-y)-2(x-y)
已知(X+3)^2+|y+6|=02(3x-3y)-4(x-y)-2(x-y)
解
(x+3)²+/y+6/=0
∴
x+3=0,y+6=0
∴x=-3,y=-6
∴x-y=-3+6=3
∴(3x-3y)-4(x-y)-2(x-y)
=3(x-y)-4(x-y)-2(x-y)
=(3-4-2)(x-y)
=-3(x-y)
=-3×3
=-9
已知(X+3)^2+|y+6|=02(3x-3y)-4(x-y)-2(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/x+y=3,求代数式5(x-y)/x+y-x+y/2(x-y)
已知x-2y=3,则(2x+y-6)/(3x-y-9)=?
已知(3x+y+6)²+|x+y+2|=2,则x=,y=.
已知x^2-y^2=6,x+y=3求x.y的值
已知x-2y=2,求4x-y-8分之3x+y-6
已知-x+y=3,则2(x-y)2次方-4(x-y)+6
已知xy=-2,x-y=3,求(x+y)(x-y)-y^2+(x-y)^2-(6x^2y-2xy^2)÷2y
已知6x+2y/9x-3y=6,那么(3x+y)平方/x平方-y平方
已知x,y满足约束条件 2x+5y>=10 2x-3y>=-6 2x+y
已知x,y满足约束条件{2x+5y>=10,2x-3y>=-6,2x+y
已知实数x,y满足2x+5y>=10;2x-3y>-6;2x+y
已知|x|=2,|y|=3,|x+y|=-(x+y)求x-y
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
已知关于方程2x-3y=7,求3(y-7)-6(x-y)
已知|x+y-3|+(x-y)2=0则