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## Homework Statement

Please find all ordered pairs of integers (x,y) such that x

^{2}+ 2x + 18 = y

^{2}

## Homework Equations

x

^{2}+ 2x + 18 = y

^{2}

## The Attempt at a Solution

Im not sure on how to begin. I tried square-rooting the expression, to solve for y, turning it into y = [tex]\sqrt{x + 2x + 18}[/tex]. I would greatly appreciate any help to get me started on this problem.

Thanks!