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): You can put this solution on YOUR website!
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.
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