<PRE><B>Question 207734</B>
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
.
( 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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