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Indivisibility by 529 (Posted on 2016-07-25) Difficulty: 3 of 5
Prove that for any integer x, the value of x^2+7x+18 is not divisible by 529.

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  Subject Author Date
Some Thoughtsre: completing the squareAdy TZIDON2016-07-25 23:34:57
completing the squarexdog2016-07-25 17:47:27
Brute force.broll2016-07-25 14:38:59
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