document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=252388>Question 252388</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 1) if the product (2x+3)(x+k)is 2x to the 2nd power + 13x+15 find the value of k<BR>\n" );
document.write( "2)write a quadratic expression that is the difference of two squares.<BR>\n" );
document.write( "3)factor 15m to the 4 power - 6m to the 2nd power + 9m<BR>\n" );
document.write( "4)14x to the 5th power - 49x to the 8th power<BR>\n" );
document.write( "5) subtract (-8x to the 4th power +3x)-(5x-4-x to the 4th power) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #184252 by </B><A HREF=/tutors/aboutme.mpl?userid=richwmiller><B>richwmiller(17219)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=richwmiller><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=richwmiller><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=184252\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> you have too many questions lumped together.<BR>\n" );
document.write( "I'll answer one of them<BR>\n" );
document.write( "(2x+3)(x+k)=2x^2+13x+15<BR>\n" );
document.write( "k=?<BR>\n" );
document.write( "let's multiply out the two factors using foil<BR>\n" );
document.write( "2x^2 so far so good<BR>\n" );
document.write( "now inner and outer<BR>\n" );
document.write( "2xk+3x<BR>\n" );
document.write( "last <BR>\n" );
document.write( "3k<BR>\n" );
document.write( "my first guess is that k=5<BR>\n" );
document.write( "since 3*5=15 and we have 3k as the final term<BR>\n" );
document.write( "subtract3xfrom 13x we get 10 x<BR>\n" );
document.write( "so 2xk is 10x<BR>\n" );
document.write( "so k is indeed 5<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );