document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1119606>Question 1119606</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Factoring:<BR>\n" );
document.write( "a)16b^2c^2-4(b^2+c^2-a^2)<BR>\n" );
document.write( "b)(x^2+4y^2-20)^2-16(xy-4)^2<BR>\n" );
document.write( "I have tried some ways but could not solve this </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #735182 by </B><A HREF=/tutors/aboutme.mpl?userid=Alan3354><B>Alan3354(69443)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Alan3354><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=Alan3354><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=735182\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Factoring:<BR>\n" );
document.write( "a)16b^2c^2-4(b^2+c^2-a^2)\r<BR>\n" );
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document.write( "b)(x^2+4y^2-20)^2-16(xy-4)^2<BR>\n" );
document.write( "Same here.  Some \"simplification\" might be possible after using the difference of squares, but Step 1 is the difference of squares.<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28x%5E2%2B4y%5E2-20%29%5E2-16%28xy-4%29%5E2+=+%28%28x%5E2%2B4y%5E2-20%29-4%28xy-4%29%29%2A%28%28x%5E2%2B4y%5E2-20%29%2B4%28xy-4%29%29 ALIGN=MIDDLE   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "= <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28%28x%5E2%2B4y%5E2-4%29-4xy%29%2A%28%28x%5E2%2B4y%5E2-36%29%2B4xy%29 ALIGN=MIDDLE  ALT=\"%28%28x%5E2%2B4y%5E2-4%29-4xy%29%2A%28%28x%5E2%2B4y%5E2-36%29%2B4xy%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "= <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28x%5E2%2B4y%5E2-4-4xy%29%2A%28x%5E2%2B4y%5E2-36%2B4xy%29 ALIGN=MIDDLE  ALT=\"%28x%5E2%2B4y%5E2-4-4xy%29%2A%28x%5E2%2B4y%5E2-36%2B4xy%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "= <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28x%5E2-4xy%2B4y%5E2-4%29%2A%28x%5E2%2B4xy%2B4y%5E2-36%29 ALIGN=MIDDLE  ALT=\"%28x%5E2-4xy%2B4y%5E2-4%29%2A%28x%5E2%2B4xy%2B4y%5E2-36%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Now each of the 4nomials can be factored.<BR>\n" );
document.write( "= <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28%28x-2y%29%5E2-4%29%2A%28%28x%2B2y%29%5E2-36%29 ALIGN=MIDDLE  ALT=\"%28%28x-2y%29%5E2-4%29%2A%28%28x%2B2y%29%5E2-36%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "= <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28x-2y-2%29%28x-2y%2B2%29%2A%28x%2B2y-6%29%2A%28x%2B2y%2B6%29 ALIGN=MIDDLE  ALT=\"%28x-2y-2%29%28x-2y%2B2%29%2A%28x%2B2y-6%29%2A%28x%2B2y%2B6%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "Other than knowing about the difference of squares, it's just careful bookkeeping.<BR>\n" );
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document.write( "Look up difference of 2 cubes, also. </SPAN>\n" );
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