document.write( "Question 399789: \"If eighteen meters of fencing are required to enclose a rectangular garden, what is the area of the garden as a function of the length of one side?\"
\n" ); document.write( "How would I acheive the answer \"+A=-x%5E2%2B9x+\"?
\n" ); document.write( "

Algebra.Com's Answer #283063 by MathLover1(20850)\"\" \"About 
You can put this solution on YOUR website!

\n" ); document.write( "you can express the \"area\" of a rectangle as a function of the length \"x\" of one side like:\r
\n" ); document.write( "\n" ); document.write( "\"A=xy+\" \r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Your perimeter is \"P=18\", so \"18=2x%2B2y\"...you can divide both sides by \"2\"\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"9=x%2By\"....solve for \"y\"\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"y+=+9+-+x\"...plug it in \"+A=xy\"\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"+A=xy+=+x%289+-+x%29+\"\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"+A=+9x+-+x%5E2+\"...or \"+A=+-x%5E2+%2B+9x++\"\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "
\n" ); document.write( "
\n" );