document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=392450>Question 392450</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Solve this equation<BR>\n" );
document.write( "(x+5)(x-4)(x+2)>0\r<BR>\n" );
document.write( "\n" );
document.write( "Also: solve for x<BR>\n" );
document.write( "4x(x-7)-5x(x-6)=-3\r<BR>\n" );
document.write( "\n" );
document.write( "add:<BR>\n" );
document.write( "(2x^2-5xy+y^2)+(-9x^2-2xy-y^2)+(x^2+xy-2y^2)\r<BR>\n" );
document.write( "\n" );
document.write( "I have been working on these problems for quite some time. thanks in advance! </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #278526 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=278526\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> (x+5)(x-4)(x+2)>0<BR>\n" );
document.write( "---<BR>\n" );
document.write( "Draw a number line and plot x = -5,-2, and 4<BR>\n" );
document.write( "---<BR>\n" );
document.write( "Check a value from each of the resulting intervals<BR>\n" );
document.write( "to see where the solution set is.<BR>\n" );
document.write( "---<BR>\n" );
document.write( "If x= -10 you get -*-*- > 0; false<BR>\n" );
document.write( "---<BR>\n" );
document.write( "If x = -3, you get +*-*- > 0; true, so solutions in (-5,-2)<BR>\n" );
document.write( "---<BR>\n" );
document.write( "If x = 0, you get +*-*+ > 0; false<BR>\n" );
document.write( "---<BR>\n" );
document.write( "If x = 10, you get +*+*+ > 0; true, solutions in (4,+inf)<BR>\n" );
document.write( "=============<BR>\n" );
document.write( "Ans: (-5,-2)U(4,+inf)<BR>\n" );
document.write( "=======================================<BR>\n" );
document.write( " <BR>\n" );
document.write( "Also: solve for x<BR>\n" );
document.write( "4x(x-7)-5x(x-6)=-3<BR>\n" );
document.write( "4x^2-28-5x^2+30x = -3<BR>\n" );
document.write( "---<BR>\n" );
document.write( "-x^2+30x-25 = 0<BR>\n" );
document.write( "---<BR>\n" );
document.write( "x^2-30x+25 = 0<BR>\n" );
document.write( "---<BR>\n" );
document.write( "x = [30 +- sqrt(900-4*25)]/2<BR>\n" );
document.write( "---<BR>\n" );
document.write( "x = [30 +- sqrt(800)]/2<BR>\n" );
document.write( "---<BR>\n" );
document.write( "x = [30 +- 20sqrt(2)]/2<BR>\n" );
document.write( "---<BR>\n" );
document.write( "x = [15 +- 10sqrt(2)]<BR>\n" );
document.write( "=============================<BR>\n" );
document.write( " <BR>\n" );
document.write( "Add:<BR>\n" );
document.write( "(2x^2-5xy+y^2)+(-9x^2-2xy-y^2)+(x^2+xy-2y^2)<BR>\n" );
document.write( "---<BR>\n" );
document.write( "= -6x^2-6xy-2y^2<BR>\n" );
document.write( "---<BR>\n" );
document.write( "= -2(3x^2+3xy+y^2)<BR>\n" );
document.write( "======================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H. <BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );