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Mathematics 7 Online
OpenStudy (anonymous):

(3x - 2)(3x + 1)

OpenStudy (agreene):

FOIL -2-3 x+9 x^2

OpenStudy (unklerhaukus):

\[(3x-2)(3x+1)=9x^2-6x+3x-2=9x^2-3x-2\]

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