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OpenStudy (anonymous):
Factor: 121x2 - 1 (121x + 1)(x - 1) (11x + 1)(11x - 1) (11x - 1)2 prime
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OpenStudy (anonymous):
Think (a^2-b^2)=(a+b)(a-b)
OpenStudy (anonymous):
Mutilpy each of the answers out if you're stuck. But like fiddle said, 121 is 11^2 and 1 is 1^2 so the answer is B.
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