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证明:对任意正整数n,分数21n+4/14n+3不可约.

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证明:对任意正整数n,分数21n+4/14n+3不可约.


1楼2015-05-04 00:43回复
    2(21n+4) - 3(14n+3) = -1 => gcd(21n+4, 14n+3) = 1


    2楼2015-05-04 00:44
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