For which integer $a$ does $x^2 - x + a$ divide $x^{13} + x + 90$?
Question:
For which integer $a$ does $x^2 - x + a$ divide $x^{13} + x + 90$?
Answer:
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For which integer $a$ does $x^2 - x + a$ divide $x^{13} + x + 90$?
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