document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=799565>Question 799565</A>: <I><SPAN STYLE=\"word-break: break-all;\"> For what values of x is the quantity (x&#8722;9)(x+7) negative? Enter your answer as an inequality. <BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #482704 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=482704\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> For what values of x is the quantity (x&#8722;9)(x+7) negative? Enter your answer as an inequality.<BR>\n" );
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document.write( "Draw a number line.<BR>\n" );
document.write( "x = 9 or x = -7 make the product be zero.<BR>\n" );
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document.write( "Plot x = -7 and x = 9 on the number line.<BR>\n" );
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document.write( "Test a value in each of the resulting intervals to<BR>\n" );
document.write( "see where (x-9)(x+7) < 0<BR>\n" );
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document.write( "Testing x = -10;; -*- < 0 :::: false<BR>\n" );
document.write( "Testing x = 0 :: -*+ < 0 :::: true, so solutions in (-7,9)<BR>\n" );
document.write( "Testing x = 10 :: +*+ < 0 :::: false<BR>\n" );
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document.write( "Answer:: -7< x < 9<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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