document.write( "Question 407687: help with a question
\n" );
document.write( "how to find the domain of f(x)/g(x) g(x)= x+2/x-4 f(x)=x^2+6
\n" );
document.write( "
\n" );
document.write( "x^2 + 6 / x+2/x-4\r
\n" );
document.write( "\n" );
document.write( "I believe that I have to multiply both sides by x-4
\n" );
document.write( "but I am really lost on a problem like this and do not understand. \n" );
document.write( "
Algebra.Com's Answer #287343 by graphmatics(170)![]() ![]() You can put this solution on YOUR website! f(x)/g(x) = ((x+2)/(x-4))/((x^2+6)/(1)) \n" ); document.write( "f(x)/g(x) = ((x+2)/(x-4))*(1)/(x^2+6) \n" ); document.write( " = ((x+2)*(1))/((x-4)*(x^2+6))\r \n" ); document.write( "\n" ); document.write( "a point is not in the domain if (x-4)*(x^2+6) = 0. \n" ); document.write( "This is because dividing by 0 is undefined. \n" ); document.write( "x^2+6 > 0 for each x. If x = 4 then (4-4)*(x^2+6) = 0 \n" ); document.write( "so the domain is every x except x = 4\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |