SOLUTION: the sum of an integer squared and four times the integer is 45 find the integers

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Question 743194: the sum of an integer squared and four times the integer is 45 find the integers
Answer by tommyt3rd(5050) About Me  (Show Source):
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an integer squared means:
n%5E2
four times the integer means:
4n
the sum of an integer squared and four times the integer is 45 means:
n%5E2%2B4n=45
...which we will solve...
n%5E2%2B4n=45
n%5E2%2B4n-45=0
9 and -5 will multiply to -45 and subtract to 4...
%28n-5%29%28n%2B9%29=0
so that n=5 or n=-9