8X-8Y-3X+3Y=-12和6X+6Y-8X-4Y=16.帮我解一下好吗?谢谢

【2(x-y)^3-8(x-y)^2(x+y)+6y(x-y)^2】/2(x-y)^2= 8x-8y-3x-3y=-12,6x+6y-8x+4y=16 填空题 x+y/4=x-y/6=3x+12y+5/8 x= y= 8（x-y)=3（x+y)-12 6（x+y)=4（2x-y)+16 8（x-y)=3（x+y)-12 6（x+y)=4（2x-y)+16 [2(x-y)^5-8(x-y)^2(x+y)+6y(x-y)^2]÷2(x-y)^2[2(x-y)^3-8(x-y)^2(x+y)+6y(x-y)^2]÷2(x-y)^2 8X-8Y-3X+3Y=-12和6X+6Y-8X-4Y=16.二元一次方程, 8X-8Y-3X+3Y=-12和6X+6Y-8X-4Y=16.帮我解一下好吗?谢谢 已知x.x+y.y-6x-8y+25=0,求3x.x+5y的值 求解简单的二元一次方程组x=3y-2和y=2x-y 2x=3y-12和4y=2x+1 3x-13y=-12和x+3y=2 2x-5y+13=0和9x+6y-8=0 (3x-4y)(5x-4y)-(7x-8y)(6y-5x) 4x-3y/x-2y÷6y-8x/y-2x 81/8*(-x-y)^6*(x-y)^3*4/9(x+y)^4*(y-x)^2 3(x-y)^2-7(x-y)+8(y-x)^2+6(y-x)合并同类项. 【2(x-y)(x-y)(x-y)-8(x-y)(x-y)(x+y)+6y(x-y)(x-y)]/2(x-y)(x-y) {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 12y(x-y)^2-8(x-y)^3=? 用加减法解下列方程组 2x+5y=12和2x+3y=6 5x-5y=33和15x+5y=7 2x+y=9和x+3y=11 x-2y=-1和3x+5y=8直接答案我不懂