已知|3x+1|+(y-1)²=0,求(2x³+3x²)-(x³-3x²-y的二千零八次方)的值
问题描述:
已知|3x+1|+(y-1)²=0,求(2x³+3x²)-(x³-3x²-y的二千零八次方)的值
答
|3x+1|+(y-1)²=0,那么3x+1=0 y-1=0x= -1/3 y=1(2x³+3x²)-(x³-3x²-y的二千零八次方)=2x³+3x²-x³+3x²+y^2008=x³+6x²+y^2008= -1/27+6×1/9+1=44/27...