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Mathematics 14 Online
OpenStudy (anonymous):

Factor by grouping 12c^2-7c-12=

jimthompson5910 (jim_thompson5910):

12c^2-7c-12 12c^2+9c-16c-12 3c(4c+3)-4(4c+3) (3c-4)(4c+3)

jimthompson5910 (jim_thompson5910):

So 12c^2-7c-12=(3c-4)(4c+3)

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