平方项与绝对值项均恒非负,两非负项之和=0,两非负项均=0
x+2=0x=-2
y-1=0y=1
(2x³+3x²)-(x³-3x²-y^2010)
=2x³+3x²-x³+3x²+y^2010
=x³+6x²+y^2010
=(-2)³+6×(-2)²+1^2010
=-8+24+1
=17