計算 (1)(π?3)0?(1/2)?1+(2/3)2008×(?1.5)2009 (2)5(a4)3+(-2a3)2?(-a2)3-a15÷a3 (3)20112-2010×2012 (4)(x+1)(x-1)(x2-x+1)(x2+x+
計算
(1)
(π?3)0?()?1+()2008×(?1.5)2009(2)5(a
4)
3+(-2a
3)
2?(-a
2)
3-a
15÷a
3(3)2011
2-2010×2012
(4)(x+1)(x-1)(x
2-x+1)(x
2+x+1)
數(shù)學人氣:878 ℃時間:2020-05-15 02:28:37
優(yōu)質解答
(1)原式=1-2+[
×(-1.5)]
2008?(-1.5)=1-2-1.5=-2.5;
(2)原式=5a
12-4a
6?a
6-a
12=5a
12-4a
12-a
12=0;
(3)原式=2011
2-(2011-1)×(2011+1)=2011
2-(2011
2-1)=2011
2-2011
2+1=1;
(4)原式=[(x-1)(x
2+x+1)][(x+1)(x
2-x+1)]=(x
3-1)(x
3+1)=x
6-1.
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