document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=113291>Question 113291</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/0536980179/algebrahomeworkh>Beginning and Intermediate Algebra</A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> A square is represented by 4x^2 +28x+49 inches squared. Find the length of a side of the square in terms of x\r<BR>\n" );
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document.write( "( I need to set this up in equation format and solve.) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #82439 by </B><A HREF=/tutors/aboutme.mpl?userid=Earlsdon><B>Earlsdon(6294)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Earlsdon><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=82439\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> You are given the area of the square as:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=A+=+4x%5E2%2B28x%2B49 ALIGN=MIDDLE  ALT=\"A+=+4x%5E2%2B28x%2B49\"   DISABLED_style= \"max-width:90%; height:auto;\" > and, as you know, the area of a square is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=A+=+s%5E2 ALIGN=MIDDLE  ALT=\"A+=+s%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" > where s is the length of one side of the square, so...<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=s%5E2+=+4x%5E2%2B28x%2B49 ALIGN=MIDDLE  ALT=\"s%5E2+=+4x%5E2%2B28x%2B49\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Let's factor the trinomial to see if it's a perfect square:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=4x%5E2%2B28x%2B49+=+%282x%2B7%29%282x%2B7%29 ALIGN=MIDDLE  ALT=\"4x%5E2%2B28x%2B49+=+%282x%2B7%29%282x%2B7%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >=<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%282x%2B7%29%5E2 ALIGN=MIDDLE  ALT=\"%282x%2B7%29%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" > it is a perfect square, so...<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=s%5E2+=+%282x%2B7%29%5E2 ALIGN=MIDDLE  ALT=\"s%5E2+=+%282x%2B7%29%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" > Now take the square root of both sides.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=s+=+%282x%2B7%29 ALIGN=MIDDLE  ALT=\"s+=+%282x%2B7%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > and this is the length of one side of the square in terms of x.<BR>\n" );
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