document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=332530>Question 332530</A>: <I><SPAN STYLE=\"word-break: break-all;\"> x^2-16<= 0 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #238288 by </B><A HREF=/tutors/aboutme.mpl?userid=vleith><B>vleith(2983)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=vleith><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=238288\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Find the roots.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%5E2-16%3C=+0 ALIGN=MIDDLE  ALT=\"x%5E2-16%3C=+0\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28x-4%29%28x%2B4%29%3C=0 ALIGN=MIDDLE  ALT=\"%28x-4%29%28x%2B4%29%3C=0\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "root at x = 4 and x = -4\r<BR>\n" );
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document.write( "Now pick a value less than -4. let's say -10.<BR>\n" );
document.write( "When x=-10, then <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=100-16+=+84 ALIGN=MIDDLE  ALT=\"100-16+=+84\"   DISABLED_style= \"max-width:90%; height:auto;\" > which is > 0<BR>\n" );
document.write( "Pick a value between the two root. Say x=0<BR>\n" );
document.write( "When x=0 <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=0-16=+-16 ALIGN=MIDDLE  ALT=\"0-16=+-16\"   DISABLED_style= \"max-width:90%; height:auto;\" > which is < 0<BR>\n" );
document.write( "Pick a value greater than 4, say 10<BR>\n" );
document.write( "Again <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=100-16=+84 ALIGN=MIDDLE  ALT=\"100-16=+84\"   DISABLED_style= \"max-width:90%; height:auto;\" > which is greater than 0.<BR>\n" );
document.write( "So points to the left of -4 and to the right of 4 do not satisfy the inequality.<BR>\n" );
document.write( "The plot will be all points above the curve x^2-16 and below the x axis, between -4 and 4<BR>\n" );
document.write( "See this URL for a plot<BR>\n" );
document.write( "http://www.wolframalpha.com/input/?i=x^2-16%3C%3D0 </SPAN>\n" );
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