Question 979509
 {{{f(x)=(x-5)/(x^2-9)}}}

 domain will be all real numbers {{{x}}} except those that make denominator equal to zero

{{{(x^2-9)=0}}}=>{{{x^2=9}}}=>{{{x=sqrt(9)}}}=>{{{x=3}}} or {{{x=-3}}}


domain:

{ {{{x}}} element {{{R}}} : {{{x<>-3}}} and {{{x<>3}}} }


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