document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1076912>Question 1076912</A>: <I><SPAN STYLE=\"word-break: break-all;\"> explain how you know that 3^7+2 is an odd number<BR>\n" );
document.write( "3^7 is 2187 add 2 is 2189 how do you prove?\r<BR>\n" );
document.write( "\n" );
document.write( "prove that the product of two odd numbers is always odd<BR>\n" );
document.write( "7*7=49 how do you prove? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #691498 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=691498\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> prove that the product of two odd numbers is always odd<BR>\n" );
document.write( "-----------<BR>\n" );
document.write( "Even numbers are 2m, 2n, etc<BR>\n" );
document.write( "Odd numbers are 2m+1, 2n+1, etc<BR>\n" );
document.write( "---<BR>\n" );
document.write( "For 2 odd numbers, 2n+1 and 2m+1,<BR>\n" );
document.write( "(2n+1)*(2m+1) = 4mn + 2m + 2n + 1<BR>\n" );
document.write( "4mn + 2m + 2n is even.<BR>\n" );
document.write( "--> 4mn + 2m + 2n + 1 is odd.<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );