document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=257538>Question 257538</A>: <I><SPAN STYLE=\"word-break: break-all;\"> This problem is an example in my book:<BR>\n" );
document.write( "2(3x^2-2x+5) + (x^2+3x-7)distribute, remove parentheses<BR>\n" );
document.write( "= 2(3x^2-2x+5) + 1(x^2+3x-7)<BR>\n" );
document.write( "Can you please explain where the 1 comes from? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #189457 by </B><A HREF=/tutors/aboutme.mpl?userid=rfer><B>rfer(16322)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=rfer><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=189457\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> In this case the 1 changes nothing, just ignor it. If it was a -1 then things would change.<BR>\n" );
document.write( "2(3x^2-2x+5)+(x^2+3x-7)=2(3x^2-2x+5)+1(x^2+3x-7)<BR>\n" );
document.write( "6x^2-4x+10+x^2+3x-7=6x^2-4x+10+x^2+3x-7<BR>\n" );
document.write( "7x^2-x+3=7x^2-x+3<BR>\n" );
document.write( "everything cancils<BR>\n" );
document.write( "=0 </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );