Question 207734: Dear dir or mam: I am working on factoring trinomials completely
13n+4n^2-12
Answer by RAY100(1637)   (Show Source):
You can put this solution on YOUR website! 4 n^2 +13n -12
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factors of 4,,4-1,,2-2,,,,,,,,,,,,,factors of 12,,1-12,,2-6,,3-4,,
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Last term is negative ,,, Therefore one sign is -,,and one +,,,
and middle term is result of a difference of outside, inside, factors
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( 4n-3) (n+4)
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check using FOIL,
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4 n^2 +16n - 3n -12= 4n^2 +13n -12,,,,,ok
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