document.write( "Question 419447: Find (f+g)(x),(f-g)(x),(fg)(x),and their domains.
\n" ); document.write( "f(x)=x+3,g(x)=x-3\r
\n" ); document.write( "\n" ); document.write( "(f+g)(x)=
\n" ); document.write( "(Simplify your answer.) \n" ); document.write( "

Algebra.Com's Answer #293342 by Gogonati(855) $\"\"$ $\"About$

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(f+g)(x)=x+3+x-3=2x
\n" ); document.write( "(f-g)(x)=x+3-x+3=6
\n" ); document.write( "(f.g)(x)=(x+3)(x-3)=x^2-9.
\n" ); document.write( " Each from the functions have for domain the set of real numbers. \n" ); document.write( "

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