| 1 | 1 | 1 | ||||
(1) ( | )2 − x2 = ( | − x)( | + x) | |||
| x | x | x |
| 1 | 1 | √a2+1 + a | ||||
= | = | = | ||||
| x | √a2+1 − a | (√a2+1 − a)(√a2+1 + a) |
| √a2+1 + a | ||
= | = √a2 + 1 + a. | |
| a2+1−a2 |
| 1 | ||
(2) | = √a2 + 1 + a, | |
| x |
| 5^2 | 52 |
| 2^{10} | 210 |
| a_2 | a2 |
| a_{25} | a25 |
| p{2} | √2 |
| p{81} | √81 |
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