document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=786078>Question 786078</A>: <I><SPAN STYLE=\"word-break: break-all;\"> For what values of x are the following expressions defined?\r<BR>\n" );
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document.write( "a)the root of x squared + 1\r<BR>\n" );
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document.write( "I have the answer and it says x can be all real numbers but I don't know why??\r<BR>\n" );
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document.write( "Can you please help me?\r<BR>\n" );
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document.write( "Thank you very much! </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #477799 by </B><A HREF=/tutors/aboutme.mpl?userid=Cromlix><B>Cromlix(4381)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Cromlix><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=Cromlix><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=477799\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=sqrt%28x%5E2+%2B+1%29 ALIGN=MIDDLE  ALT=\"sqrt%28x%5E2+%2B+1%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "x can be all real numbers as<BR>\n" );
document.write( "you will never produce a negative value under<BR>\n" );
document.write( "the square root(even with negative values<BR>\n" );
document.write( "of x)<BR>\n" );
document.write( "Hope this helps.<BR>\n" );
document.write( ":-) </SPAN>\n" );
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