document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=25396>Question 25396</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Here's another one that is giving me difficulty Please help!!!!!!<BR>\n" );
document.write( "Factor: 20y^2-33y+10\r<BR>\n" );
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document.write( "thank you </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #13617 by </B><A HREF=/tutors/aboutme.mpl?userid=longjonsilver><B>longjonsilver(2297)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=longjonsilver><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/cgi-bin/show-face.mpl?user=longjonsilver><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=13617\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> this is the hardest type of quadratic factorisation since you have to do some mental arithmetic!\r<BR>\n" );
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document.write( "we need 2 numbers that multiply to give 20...so 1x20 OR 2x10 OR 4x5<BR>\n" );
document.write( "we need 2 numbers that multiply to give 10...so 1x10 OR 2x5\r<BR>\n" );
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document.write( "and we need the 4 numbers to combine to add up to 33!\r<BR>\n" );
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document.write( "And this is ignoring the signs --> we will think of those later.\r<BR>\n" );
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document.write( "So 1x20 is too big a gap...remember we want to get 33 ultimately. I think 4x5 is the best bet... so lets GUESS at (5y)(4y)\r<BR>\n" );
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document.write( "Now for the other 2...lets go for 2x5... 5*5 + 2*4 is 25+8 --> 33!!!\r<BR>\n" );
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document.write( "so, (5y-2)(4y-5)\r<BR>\n" );
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document.write( "I have added 2 negatives in, since -2x-5 is +10, yet we get -33 when we calcualte the 33 sum.\r<BR>\n" );
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document.write( "jon. </SPAN>\n" );
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