题目内容
观察(1)
=2×
,(2)
=3×
,(3)
=4×
猜想:
=______.
| 3 | 2+
| ||
| 3 |
| ||
| 3 | 3+
| ||
| 3 |
| ||
| 3 | 4+
| ||
| 3 |
| ||
| 3 | 5+
| ||
观察可知等式左边根号下是a+
,等式右边根号外是a根号内是
,所以规律为
=a×
,
所以
=5×
.
| a |
| b |
| a |
| b |
| 3 | a+
| ||
| 3 |
| ||
所以
| 3 | 5+
| ||
| 3 |
| ||
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