题目内容
(1)
+
+
-
(2)8x3+125=0
(3)(3
+
)(
-4
)
(4)(3+
)2006(3-
)2005
(5)
-(
)0+(-2)3÷3-1
(6)
+
+|π-4|+
.
| 108 |
| 45 |
1
|
| 125 |
(2)8x3+125=0
(3)(3
| 2 |
| 48 |
| 18 |
| 3 |
(4)(3+
| 10 |
| 10 |
(5)
| 4 |
| 1 | ||
|
(6)
(1-
|
| 3 | (2-
| ||
| (π-3.14)2 |
(1)原式=6
+3
+
-5
=
-2
;
(2)方程变形得:x3=-
,
解得:x=-
;
(3)原式=(3
-4
)(3
+4
)
=(3
)2-(4
)2
=-30;
(4)原式=(3+
)[(3+
)(3-
)]2005
=-3-
;
(5)原式=2-1-8×3
=-23;
(6)原式=
-1+2-
+4-π+π-3.14
=1.86.
| 3 |
| 5 |
2
| ||
| 3 |
| 5 |
=
| 20 |
| 3 |
| 5 |
(2)方程变形得:x3=-
| 125 |
| 8 |
解得:x=-
| 5 |
| 2 |
(3)原式=(3
| 2 |
| 3 |
| 2 |
| 3 |
=(3
| 2 |
| 3 |
=-30;
(4)原式=(3+
| 10 |
| 10 |
| 10 |
=-3-
| 10 |
(5)原式=2-1-8×3
=-23;
(6)原式=
| 2 |
| 2 |
=1.86.
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