document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=639304>Question 639304</A>: <I><SPAN STYLE=\"word-break: break-all;\"> How do I factor 25y^2 - 10y + 1? \r<BR>\n" );
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document.write( "I thought it was a perfect square trinomial, but that doesn't make sense because of the + 1. And I tried factoring it out by taking 5y out, but that doesn't match the answer in the back of my book. I don't know how they got that answer. The answer to the question is (5y - 1)^2. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #402714 by </B><A HREF=/tutors/aboutme.mpl?userid=MathTherapy><B>MathTherapy(10555)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=MathTherapy><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=MathTherapy><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=402714\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <BR>\n" );
document.write( "How do I factor 25y^2 - 10y + 1? \r<BR>\n" );
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document.write( "I thought it was a perfect square trinomial, but that doesn't make sense because of the + 1. And I tried factoring it out by taking 5y out, but that doesn't match the answer in the back of my book. I don't know how they got that answer. The answer to the question is (5y - 1)^2.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=25y%5E2+-+10y+%2B+1 ALIGN=MIDDLE  ALT=\"25y%5E2+-+10y+%2B+1\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "We're looking for 2 factors whose product is + 25 (c * a), and whose sum is - 10 (b). These 2 factors are: - 5 and - 5, thus making the replacement for - 10y, - 5y and - 5y.\r<BR>\n" );
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document.write( "We now have: <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=25y%5E2+-+5y+-+5y+%2B+1 ALIGN=MIDDLE  ALT=\"25y%5E2+-+5y+-+5y+%2B+1\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%2825y%5E2++-+5y%29+-+%285y+%2B+1%29 ALIGN=MIDDLE  ALT=\"%2825y%5E2++-+5y%29+-+%285y+%2B+1%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "5y(5y - 1) - 1(5y - 1)\r<BR>\n" );
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document.write( "(5y - 1)(5y - 1), or <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight_green%28%285y+-+1%29%5E2%29 ALIGN=MIDDLE  ALT=\"highlight_green%28%285y+-+1%29%5E2%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Send comments and “thank-yous” to “D” at MathMadEzy@aol.com </SPAN>\n" );
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