document.write( "Question 319142: given functions f and g, determine the domain of f+g
\n" ); document.write( "f(x)=3x^2 -9 g(x)=2x^3 -10
\n" ); document.write( "

Algebra.Com's Answer #228498 by nyc_function(2741)\"\" \"About 
You can put this solution on YOUR website!
f + g = f(x) + g(x).\r
\n" ); document.write( "\n" ); document.write( "f + g = 3x^2 - 9 + 2x^3 - 10\r
\n" ); document.write( "\n" ); document.write( "f + g = 2x^3 + 3x^2 - 19\r
\n" ); document.write( "\n" ); document.write( "The domain of f + g is ALL REAL NUMBERS because x can be safely replaced by any real number in the function. \r
\n" ); document.write( "\n" ); document.write( "
\n" ); document.write( "
\n" );