document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=757114>Question 757114</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Ok, I have 4 more problems on my Graphing Quadratics worksheet. And it's just factoring the equation. Here's one I don't understand:\r<BR>\n" );
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document.write( "7x^2 - 43x - 42 = 0\r<BR>\n" );
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document.write( "I forget how to factor that problem, and a few of these:\r<BR>\n" );
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document.write( "7a^2 - 59a + 24 = 0\r<BR>\n" );
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document.write( "5n^2 + 31n - 28 = 0\r<BR>\n" );
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document.write( "5v^2 - 8v - 21 = 0\r<BR>\n" );
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document.write( "Help me with this, and more tips to factor faster? Thanks so much! I need it for my Algebra 1 class. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #460678 by </B><A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><B>josgarithmetic(39616)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><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=460678\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Just helping with this one:  <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=7x%5E2+-+43x+-+42+=+0 ALIGN=MIDDLE  ALT=\"7x%5E2+-+43x+-+42+=+0\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Requiring two binomials, one with leading term 7x and other with leading term x.<BR>\n" );
document.write( "The -42 contant term in the trinomial means you need to find which factorizations of -42 will make the two binomials work.\r<BR>\n" );
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document.write( "42=2*21<BR>\n" );
document.write( "42=6*7<BR>\n" );
document.write( "42=3*14<BR>\n" );
document.write( "maybe also 42=1*42\r<BR>\n" );
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document.write( "You may need 6 to 8 combinations to try.  You could also try synthetic division if you know it, but not likely if you're just in Algebra 1.\r<BR>\n" );
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document.write( "Trying:  (7x_____2)(x____21_)<BR>\n" );
document.write( "2x and 63x ?<BR>\n" );
document.write( "No, not work.\r<BR>\n" );
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document.write( "Try:  (7x_____21)(x_____2)<BR>\n" );
document.write( "21x and 14x<BR>\n" );
document.write( "No.\r<BR>\n" );
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document.write( "Try:  (7x____3)(x____14)<BR>\n" );
document.write( "3x and 98x<BR>\n" );
document.write( "NO.\r<BR>\n" );
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document.write( "Try:    (7x_____14)(x_____3)<BR>\n" );
document.write( "7x and 14x<BR>\n" );
document.write( "Not useful.\r<BR>\n" );
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document.write( "Try:  (7x____6)(x_____7)<BR>\n" );
document.write( "6 and 49<BR>\n" );
document.write( "Looks like might work.<BR>\n" );
document.write( "NOW Which sign goes where?  You want 6 and 49 somehow to give you -43. </SPAN>\n" );
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