(1)-32+|-8|-(π-2009)0-1÷(-2)-1
(2)20082-2007×2009
(3)-3
(4)(-ab2)3?(-9a3b)÷(-3a3b5)
(5)(2x+y-3)(2x-y-3)
网友回答
解:(1)原式=-9+8-1+2
=0;
(2)原式=20082-(2008-1)(2008+1)
=20082-(20082-1)
=20082-20082+1
=1;
(3)原式=
=
=;
(4)原式=(-a3b6)(-9a3b)÷(-3a3b5)
=9a6b7÷(-3a3b5)
=-3a3b2;
(5)原式=[(2x-3)+y][(2x-3)-y]
=(2x-3)2-y2
=4x2-12x+9-y2.
故