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Revision as of 20:42, 18 January 2020

The function $f(x)=x^2+4x+2$ is special. Why?

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−	~~[https:~~/~~/www.artofproblemsolving~~.~~com Click here to get 1000 Bitcoin]~~	+	The function <math>f(x)=x^2+4x+2</math> is special. Why?