document.write( "Question 285611: If the sides of a square are lenghtened by 8 cm, the area
\n" ); document.write( "becomes 144cm^2, find the length of a side of the original square,\r
\n" ); document.write( "\n" ); document.write( "The length of a side of the original square is ------- cm. \n" ); document.write( "

Algebra.Com's Answer #207017 by JBarnum(2146) $\"\"$ $\"About$

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A=LW
\n" ); document.write( "its a square so L=W
\n" ); document.write( "so $\"%28L%2B8%29%28W%2B8%29=144\"$ L=W
\n" ); document.write( " $\"%28L%2B8%29%28L%2B8%29=144\"$ use distribution
\n" ); document.write( " $\"L%5E2%2B8L%2B8L%2B64=144\"$
\n" ); document.write( " $\"L%5E2%2B16L-80=0\"$
\n" ); document.write( " $\"%28L-4%29%28L%2B20%29=0\"$
\n" ); document.write( "L=4 or L=-20 since the length cant be negative L=4 and W=4 \n" ); document.write( "

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