8x+9y=6 24x+25y=14 怎么解
(x/8+x/12)*3+(x/12+x/24)y=x怎么解,
已知x.x+y.y-6x-8y+25=0,求3x.x+5y的值
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)
【2(x-y)^3-8(x-y)^2(x+y)+6y(x-y)^2】/2(x-y)^2=
解方程组:1、6(x-y)-2(x-y)=14 2、3(x-y)+(x+y)+5 怎么解
已知x.x+y.y+8x+6y+25=0,求代数式(x.x-4y.y)/(x.x+4xy+4y.y)-x/(x+2y)的
x(y+2)+(4-x)=9与x(y+3)+y(8-x)=14解方程式
方程组 2x+3y-1=x+6 y-x-8=x+6 怎么解,
6(x-y)-2(x+y)=14 3(x-y)+(x+y)=5
{4/(x+y)+6/(x-y)=3 {9/(x-y)-1/(x+y)=1
9X+4Y=35 8X+3Y=30二元一次方程怎么解