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OpenStudy (anonymous):
Simplify: (7x + 1) (7x - 1)
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OpenStudy (anonymous):
Use disribution twice. Start with (7x + 1) (7x - 1) = 7x(7x-1) + 1(7x-1)
OpenStudy (abb0t):
\[(7x \times 7x)+(7x \times -1)+(7x \times 1) + (1 \times -1)\]
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