方程组{ x^(x-y)=y^(x+y) 有()个解?y√X=1
解方程组(x+y)(x-2y)=-5 (x-y)(x+2y)=7
解方程组,√(x+1/y)+√(x-y-2)=4 2x-y+1/y=10
解方程组(三分之x+y)+y=6,3(x+y)-y=24
解方程组:(0.2x+0.1y)/2- (4x-y)/10=(x-y)/5+ (3x+0.5y)/30 (3x+2y-1
解方程组x+y+√(x+y)=20;x²+y²=136
解方程组{ 3x-4y(x-y)=3 { 2x-3y=1
解关于X,Y的方程组 {x+y=a (a-1)x+y=5
解方程组x+y=15 (x+15%x+y+10%y)=17
解方程组{(x-2)(y+3)=(x+1)(y-1) {(x+1)(y+1)=(x-1)(y+5)
要求 解方程组:{(X-1)(Y+1)=(X+1)(Y+1){X(2+Y)-6=Y(X-4)
解方程组{4/x+y+6/x-y=3, 9/x-y-1/x+y=1
解方程组:{4/x+y+6/x-y=3 9/x-y-1/x+y=1}