document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=895219>Question 895219</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Listed under \"Simultaneous equation of which one is linear and one is quadratic\"\r<BR>\n" );
document.write( "\n" );
document.write( "y=x2+2x-15  and x=2y+10 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #542735 by </B><A HREF=/tutors/aboutme.mpl?userid=lwsshak3><B>lwsshak3(11628)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=lwsshak3><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=542735\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Listed under \"Simultaneous equation of which one is linear and one is quadratic\"<BR>\n" );
document.write( "y=x^2+2x-15 and x=2y+10<BR>\n" );
document.write( "sub (2y+10)for x in 1st equation<BR>\n" );
document.write( "y=(2y+10)^2+2(2y+10)-15<BR>\n" );
document.write( "y=4y^2+40y+100+4y+20-15<BR>\n" );
document.write( "4y^2+43y+105=0<BR>\n" );
document.write( "(y+7)(4y+15)=0<BR>\n" );
document.write( "y=-7<BR>\n" );
document.write( "x=-4<BR>\n" );
document.write( "or<BR>\n" );
document.write( "y=-15/4=-3.75<BR>\n" );
document.write( "x=2.5<BR>\n" );
document.write( "points of intersection: (-4,-7) and (2.5,-3.75)<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );