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OpenStudy (anonymous):
Simplify: (7x + 1) (7x - 1) a.49x2 + 2 b.49x2 - 2x + 2 c.49x2 - 14x + 1 D.49x2 - 1
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OpenStudy (mayliz):
D .49x2-1
OpenStudy (anonymous):
thank you
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