题目内容
化简或计算:
(1)(
)
-[3×(
)0]-1-[81-0.25+(3
) -
] -
-10×0.027
;
(2)
+[1-2(
)
]×
.
(1)(
| 10000 |
| 81 |
| 1 |
| 4 |
| 7 |
| 8 |
| 3 |
| 8 |
| 1 |
| 3 |
| 1 |
| 2 |
| 1 |
| 3 |
(2)
a
| |||||||
a
|
| b |
| a |
| 1 |
| 3 |
| 3 | a |
(1)原式=(
)4×
-(3×1)-1-[34×(-0.25)+(
)3×(-
)]-
-10×0.33×
=
-
-1-3
=-1.
(2)原式=
+
-2
=a
(a
-2b
)+
-2
=
-2
+
-2
.
| 10 |
| 3 |
| 1 |
| 4 |
| 3 |
| 2 |
| 1 |
| 3 |
| 1 |
| 2 |
| 1 |
| 3 |
=
| 10 |
| 3 |
| 1 |
| 3 |
=-1.
(2)原式=
a
| ||||||||||||||
a
|
| 3 | a |
| 3 | b |
=a
| 1 |
| 3 |
| 1 |
| 3 |
| 1 |
| 3 |
| 3 | a |
| 3 | b |
=
| 3 | a2 |
| 3 | ab |
| 3 | a |
| 3 | b |
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