2(x-3/1) +｜y+1｜=0,求6x y-2(x y-2xy-2x )-xy的值2(x-3/1) ²+｜y+1｜=0,求6x²y-2(x²y-2xy-2x²)-xy的值

2(x-3/1) +｜y+1｜=0,求6x y-2(x y-2xy-2x )-xy的值
2(x-3/1) ²+｜y+1｜=0,求6x²y-2(x²y-2xy-2x²)-xy的值

y=-1,x=3然后带入计算

y=-1,x=3 其实很简单 用心算一下就出来了！