SOLUTION: Eighteen more than twice an integer is fifteen less than its square. Find the integer.

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Question 1177915: Eighteen more than twice an integer is fifteen less than its square. Find the integer.
Found 4 solutions by mananth, josgarithmetic, Solver92311, ikleyn:
Answer by mananth(16946)   (Show Source):
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Eighteen more than twice an integer is fifteen more than its square. Find the integer.
2x+18= x^2+15
x^2 -2x -3=0
(x-3)(x+1)=0
x=3 or -1

Answer by josgarithmetic(39620)   (Show Source):
You can put this solution on YOUR website!
n, the integer;

and some simple algebra, if to find this integer (or integers).

Answer by Solver92311(821)   (Show Source):
You can put this solution on YOUR website!

The roots of this quadratic are irrational, therefore no such integer exists.

John

My calculator said it, I believe it, that settles it

From
I > Ø

Answer by ikleyn(52803)   (Show Source):
You can put this solution on YOUR website!
.
Eighteen more than twice an integer is fifteen less than its square. Find the integer.
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@Mananth MISREAD the problem and solved DIFFERENT problem, which is IRRELEVANT to the posted one.