User:Tparameter/Sandbox: Difference between revisions

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Revision as of 16:15, 19 January 2008

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The ___domain is the set all <math>{x : x \in \Bbb{R}, x > 0}</math>.

Given the ___domain, and given

:x<mathsup>x^2</sup> - 3x + 5 = 0\,</math>

Find <math>{x}</math>.

Using the [[quadratic formula]], it is easy to find the solutions

:<math>x = 7</math> and <math>x = -4</math>, where <math>x = 7</math> is the solution to the problem, and <math>x = -4</math> is an '''extraneous solution'''.

==Books==