Answers

2014-06-21T18:02:53+05:30
For determining the factor put x+1 = 0  or x = -1 in  given polynomial
(-1)³ - 14(-1)² + 3(-1) +12
=> -1 - 14 -3 +12 
 => -6 ≠ 0
hence x+1 is not a factor of the given polynomial . 
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