解方程组 (1)2x-y=3 (2)x²+y²+2x-24=0
解方程组 y²-3x²+x+1=0 2x-y=1
解方程组 2x-y-1=0 x²-4y²+x+3y-1=0
解方程组 (1)2x-y=3 (2)x²+y²+2x-24=0
已知方程组{2x+y=6,x-3y=1,不解方程组,求7y(x-3y)²-(3y-x)²的值.
解方程组{ 3x-4y(x-y)=3 { 2x-3y=1
解方程组2x-y=0,x²-y²+3=0
已知x,y的值满足方程组x+2y=3,x-y=-2,求x/(x-y)²+x²-y²/(x+
解方程组:(x+3)(y-2)=(x-3)(y+10),(x+1)(y+3)=(x-2)(y+12)
解方程组{(x-2)(y+3)=(x+1)(y-1) {(x+1)(y+1)=(x-1)(y+5)
数学书解方程组{2(x+y)-(x-y)=3,(x+y)-2(x-y)=1
解方程组:2(x-y)/3-x+y/4=-1 ,6(x+y)-4(2x-y)=16
2(x+y)-3(x-y)=1 6(x+y)+7(x-y)=51 解方程组