document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=811356>Question 811356</A>: <I><SPAN STYLE=\"word-break: break-all;\"> <BR>\n" );
document.write( "What is a if (4,7) and (a,3) are 5 units apart? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #488704 by </B><A HREF=/tutors/aboutme.mpl?userid=Cromlix><B>Cromlix(4381)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Cromlix><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=Cromlix><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=488704\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Distance formula: Square root of(x2 - x1)^2 + (y2 - y1)^2<BR>\n" );
document.write( "5 = Sqrt of (a - 4)^2 + (3 - 7)^2<BR>\n" );
document.write( "5 = sqrt of a^2 - 8a + 16 + 16<BR>\n" );
document.write( "5 = sqrt of a^2 - 8a + 32  = 0<BR>\n" );
document.write( "(5)^2 = a^2 - 8a + 32<BR>\n" );
document.write( "a^2 - 8a + 32 - 25 = 0<BR>\n" );
document.write( "a^2 - 8a + 7 = 0<BR>\n" );
document.write( "(a - 7)(a - 1)= 0<BR>\n" );
document.write( "a = 7 or a = 1<BR>\n" );
document.write( "Hope this helps.<BR>\n" );
document.write( ":-) </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );