8x+6y-4x+5y x= y=
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8x+6y-4x+5y x= y=
8x+6y-4x+5y x= y=
8x+6y-4x+5y x= y=
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{x+y=1 ,xy=-6{x(2x-3)=0,y=x²-1{(3x+4y-3)(3x+4y+3)=0,3x+2y=5{(x-y+2)(x+y)=0,x²+y²=8{(x+y)((x+y-1)=0,(x-y)(x-y-1)=0
5x-4y(y-x)=?
若5x-4y=6,4x-5y=8,则x+y=( ),x-y=( )
填空题 x+y/4=x-y/6=3x+12y+5/8 x= y=
3(2X+Y)+(2(2x-Y)=6 (8X+4y)-(10X-5Y)=2
8x+6y-4x+5y x= y=
已知|5x-y-8|+(7y-x+2)=0则4x+6y
【2(x-y)^3-8(x-y)^2(x+y)+6y(x-y)^2】/2(x-y)^2=
(4x-2y-z)-{5x[8y-2y-(x+y)]-x+(3y-10z)]=? kuaihuajian
x-y/x-x+y/y-(x+y)(x-y)/y² y/x=2
已知x的平方+y的平方-8x+6y+25=0,求(x-y+4xy/x-y)(x+y-4xy/x+y)
已知x²+y²-8x+6y+25=0,求(x-y+4xy/x-y)(x+y-4xy/x+y)
已知x.x+y.y-6x-8y+25=0,求3x.x+5y的值
3x+2=y 5x+4=y 7x+6=y 9x+8=y 11x=y 联立方程 有的话
3x+2=y 5x+4=y 7x+6=y 9x+8=y 11x=y
3x+2=y 5X+4=Y 7X+6=Y 9X+8=y 11x=y要如何计算
3x+2=y 5x+4=y 7x+6=y 9x+8=y 11x=y怎么解
y-3x=2,y-5x=4,y-7x=6,y-9x=8,y-11x=0方程组,无