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Algebra 20 Online
OpenStudy (anonymous):

factor by grouping 2mn-8n+3m-12

OpenStudy (mathmale):

this is a great candidate for "factoring by grouping." 2mn and -8n have a common factor, and it is 2n. Thus, 2mn-8n=2n(m-4). See if you can factor the last 2 terms in the same way.

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