题目内容
已知2+
=22×
,3+
=32×
,4+
=42×
5+
=52×
…,按照这种规律,若8+
=82×
(a、b为正整数)则a+b=______.
| 2 |
| 3 |
| 2 |
| 3 |
| 3 |
| 8 |
| 3 |
| 8 |
| 4 |
| 15 |
| 4 |
| 15 |
| 5 |
| 24 |
| 5 |
| 24 |
| a |
| b |
| a |
| b |
由已知等式的规律可知,a=8,b=82-1=63,
∴a+b=71.
故答案为:71.
∴a+b=71.
故答案为:71.
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