题目内容
计算
(1)2a2-a8÷a6
(2)2-2-(
)0+(-1)4
(3)(
)-1-(3.14-π)0+0.254×44
(4)3a3b2÷a2+b-(a2b-3ab-5a2b)
(1)2a2-a8÷a6
(2)2-2-(
| 3 |
(3)(
| 1 |
| 2 |
(4)3a3b2÷a2+b-(a2b-3ab-5a2b)
(1)原式=2a2-a2=a2;
(2)原式=
-1+1=
;
(3)原式=2-1+(0.25×4)4=2-1+1=2;
(4)原式=3ab2+a2b2-3ab2-5a2b2=-4a2b2.
(2)原式=
| 1 |
| 4 |
| 1 |
| 4 |
(3)原式=2-1+(0.25×4)4=2-1+1=2;
(4)原式=3ab2+a2b2-3ab2-5a2b2=-4a2b2.
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