document.write( "Question 39813: If the sides of a square are lengthened by 4cm, the area becomes 256 square cm. Find the length of a side of the original square.
\n" ); document.write( " Thank you
\n" ); document.write( "

Algebra.Com's Answer #25252 by fractalier(6550)\"\" \"About 
You can put this solution on YOUR website!
Let the original side be x.
\n" ); document.write( "Then (x+4)^2 = 256
\n" ); document.write( "Take the square root of both sides...
\n" ); document.write( "x+4 = 16
\n" ); document.write( "x = 12 cm
\n" ); document.write( "
\n" );