先化简,再求值3x²y-[2xy²-2(xy-3/2x²y)+2xy]-2x²y先化简,再求值：3x²y-[2xy²-2(xy-3/2x²y)+2xy]-2x²y,其中x,y满足（x+2）²+丨y-1丨＝0

先化简,再求值3x²y-[2xy²-2(xy-3/2x²y)+2xy]-2x²y先化简,再求值：3x²y-[2xy²-2(xy-3/2x²y)+2xy]-2x²y,其中x,y满足（x+2）²+丨y-1丨＝0
先化简,再求值3x²y-[2xy²-2(xy-3/2x²y)+2xy]-2x²y
先化简,再求值：3x²y-[2xy²-2(xy-3/2x²y)+2xy]-2x²y,其中x,y满足（x+2）²+丨y-1丨＝0

先化简,再求值3x²y-[2xy²-2(xy-3/2x²y)+2xy]-2x²y先化简,再求值：3x²y-[2xy²-2(xy-3/2x²y)+2xy]-2x²y,其中x,y满足（x+2）²+丨y-1丨＝0
x,y满足（x+2）²+丨y-1丨＝0,则x+2=0,x=-2；y-1=0,y=1
3x²y-[2xy²-2(xy-3/2x²y)+2xy]-2x²y=3x²y-（2xy²-2xy+3x²y+2xy）-2x²y
=3x²y-2xy²-3x²y-2x²y=-2xy²-2x²y=-2xy（y-x）
将x=-2,y=1代入得-2xy（y-x）=-2X（-2）（1+2）=12