2x−1 | ||
(1) | =0, | |
x |
1 | ||
(2) 2x− | =0 ? | |
x |
1 | ||
x2− | =0 | |
2 |
1 | 1 | |||
(x− | )(x+ | )=0. | ||
√2 | √2 |
5^2 | 52 |
2^{10} | 210 |
a_2 | a2 |
a_{25} | a25 |
p{2} | √2 |
p{81} | √81 |
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