题目内容
计算| 1 |
| 2 |
| 24 |
| 4 |
| 3 |
| 18 |
| 8 |
| 1 |
| 3 |
| 54 |
分析:先把二次根式化简,再根据实数的运算法则依次进行.
解答:解;原式=
×2
-
×3
÷(2×2
×
×3
)
=
-4
÷(4
×
)
=
-4
÷16
=
-
=
.
| 1 |
| 2 |
| 6 |
| 4 |
| 3 |
| 2 |
| 2 |
| 1 |
| 3 |
| 6 |
=
| 6 |
| 2 |
| 2 |
| 6 |
=
| 6 |
| 2 |
| 3 |
=
| 6 |
| ||
| 4 |
=
3
| ||
| 4 |
点评:此题主要考查了实数的运算,解答此题的关键是熟知实数的运算法则,比较简单.
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