/ x-2/+(y+1)²=0x-2=0x=2y+1=0y=-1-2xy乘5xy²+1/2x²y²乘2y-3x乘2y+6xy=-10x²y³+x²y³-6xy+6xy=-9x²y³=-9x2²x(-1)³=36如果本题有什么不明白可以追问,请...