document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=143300>Question 143300</A>: <I><SPAN STYLE=\"word-break: break-all;\"> (x+7)(x-9)= 1-2x </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #104424 by </B><A HREF=/tutors/aboutme.mpl?userid=nabla><B>nabla(475)</B></A><img src=\"/images/stars/stars-10.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=nabla><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=104424\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> (x+7)(x-9)= 1-2x\r<BR>\n" );
document.write( "\n" );
document.write( "Expand the left side first:<BR>\n" );
document.write( "x^2-2x-63=1-2x\r<BR>\n" );
document.write( "\n" );
document.write( "Shift everything to the left side:<BR>\n" );
document.write( "x^2-64=0\r<BR>\n" );
document.write( "\n" );
document.write( "Factor the left side:<BR>\n" );
document.write( "(x+8)(x-8)=0\r<BR>\n" );
document.write( "\n" );
document.write( "This implies x=+/- 8\r<BR>\n" );
document.write( "\n" );
document.write( "Check:<BR>\n" );
document.write( "(15)(-1)=-15; 1-16=-15; true.<BR>\n" );
document.write( "(-1)(-17)=17; 1-(-16)=17; true. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );