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Lambiam, on your first example, sorry, why isn't 2 a solution? [[User:Tparameter|Tparameter]] ([[User talk:Tparameter|talk]]) 16:08, 19 January 2008 (UTC)
:Oops, I swapped the two sides during editing but made an error; it should have read
::1/(x<sup>2</sup>+3x+2) = 1/(x<sup>2</sup>+x−2),
:resulting in an extraneous solution of x = −2. --[[User talk:Lambiam|Lambiam]] 16:46, 19 January 2008 (UTC)
== Is this an example of an extraneous solution? ==
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