SOLUTION: The square of a number added to 3 times the number is 28. Find the number

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Question 838785: The square of a number added to 3 times the number is 28. Find the number
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
N%5E2%2B3N=28
N%5E2%2B3N-28=0
%28N%2B7%29%28N-4%29=0
Two solutions:
N%2B7=0
N=-7
and
N-4=0
N=4