document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=696409>Question 696409</A>: <I><SPAN STYLE=\"word-break: break-all;\"> f(x)=x-4;g(x)=5x^2<BR>\n" );
document.write( "(f+g)(5)=126\r<BR>\n" );
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document.write( "What step do i take next to find the domain?? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #429063 by </B><A HREF=/tutors/aboutme.mpl?userid=KMST><B>KMST(5328)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=KMST><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/cgi-bin/show-face.mpl?user=KMST><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=429063\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The domain is the set of x values where the function is defined.<BR>\n" );
document.write( "Unless a restriction is specified in the definition of the function,<BR>\n" );
document.write( "the function is defined for any x such that you can calculate the value of the function.<BR>\n" );
document.write( "For any value of x, you can calculate f(x)=x-4.<BR>\n" );
document.write( "For f(x), the domain is all the real numbers.<BR>\n" );
document.write( "For any value of x, you can calculate g(x)=5x^2.<BR>\n" );
document.write( "For g(x), the domain is all the real numbers.<BR>\n" );
document.write( " <BR>\n" );
document.write( "In general, for any monomial or polynomial, the domain is all the real numbers.<BR>\n" );
document.write( "When you have square roots, or variables in a denominator,<BR>\n" );
document.write( "as in <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=sqrt%28x-2%29 ALIGN=MIDDLE  ALT=\"sqrt%28x-2%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > or <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=3%2F%28x%2B5%29 ALIGN=MIDDLE  ALT=\"3%2F%28x%2B5%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >,<BR>\n" );
document.write( "you will not be able to calculate that for some values of x,<BR>\n" );
document.write( "and the domain will not include all real numbers.  </SPAN>\n" );
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