document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=111663>Question 111663</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I need help solving and check for extraneous solutions:\r<BR>\n" );
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document.write( "&#8730;y+9=1 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #81459 by </B><A HREF=/tutors/aboutme.mpl?userid=Earlsdon><B>Earlsdon(6294)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Earlsdon><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=81459\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Solve and check for extraneous roots.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=sqrt%28y%2B9%29+=+1 ALIGN=MIDDLE  ALT=\"sqrt%28y%2B9%29+=+1\"   DISABLED_style= \"max-width:90%; height:auto;\" > Square both sides. This might introduce extraneous roots.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y%2B9+=+1 ALIGN=MIDDLE  ALT=\"y%2B9+=+1\"   DISABLED_style= \"max-width:90%; height:auto;\" > or <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y%2B9+=+-1 ALIGN=MIDDLE  ALT=\"y%2B9+=+-1\"   DISABLED_style= \"max-width:90%; height:auto;\" > Subtract 9 from both sides in both of these.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y+=+-8 ALIGN=MIDDLE  ALT=\"y+=+-8\"   DISABLED_style= \"max-width:90%; height:auto;\" > or <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y+=+-10 ALIGN=MIDDLE  ALT=\"y+=+-10\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Check solutions:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=sqrt%28y%2B9%29+=+1 ALIGN=MIDDLE  ALT=\"sqrt%28y%2B9%29+=+1\"   DISABLED_style= \"max-width:90%; height:auto;\" > Substitute y = -8.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=sqrt%28-8%2B9%29+=+1 ALIGN=MIDDLE  ALT=\"sqrt%28-8%2B9%29+=+1\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=sqrt%281%29+=+1 ALIGN=MIDDLE  ALT=\"sqrt%281%29+=+1\"   DISABLED_style= \"max-width:90%; height:auto;\" > Ok<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=sqrt%28y%2B9%29+=+1 ALIGN=MIDDLE  ALT=\"sqrt%28y%2B9%29+=+1\"   DISABLED_style= \"max-width:90%; height:auto;\" > Substitute y = -10<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=sqrt%28-10%2B9%29+=+1 ALIGN=MIDDLE  ALT=\"sqrt%28-10%2B9%29+=+1\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=sqrt%28-1%29+=+1 ALIGN=MIDDLE  ALT=\"sqrt%28-1%29+=+1\"   DISABLED_style= \"max-width:90%; height:auto;\" > Not valid! This is an extraneous root.<BR>\n" );
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