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Mathematics 16 Online
OpenStudy (annie96):

Which polynomial is prime? A.x^3-64 B.x^3+49 C.x^3-1000 D.x^3+1

OpenStudy (mathmate):

Hint: Standard identities: \(a^3\pm b^3=(a\pm b)(a^2\mp ab+b^2\) So if any of the terms is not a perfect cube, we will not find rational factors.

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