document.write( "Question 727088: A garden is currently 4 meters wide and 7 meters long. If the area of the garden is to be doubled by increasing the width and length by the same number of meters, find the new dimensions of the garden, rounded to the nearest tenth \n" ); document.write( "

Algebra.Com's Answer #444983 by checkley79(3341) $\"\"$ $\"About$

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AREA=LW
\n" ); document.write( "AREA=4*7=28 M^2
\n" ); document.write( "28*2=(4+X)(7+X)
\n" ); document.write( "56=28+11X+X^2
\n" ); document.write( "X^2+11X+28-56=0
\n" ); document.write( "X^2+11X-28=0
\n" ); document.write( " $\"x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+\"$
\n" ); document.write( "X=(-11+-SQRT(11^2-4*1*-28))/2*1
\n" ); document.write( "X=(-11+-SQRT(121+112))/2
\n" ); document.write( "X=(-11+-SQRT233)/2
\n" ); document.write( "X=(-11+-15.264)/2
\n" ); document.write( "X=(-11+15.264)/2
\n" ); document.write( "X=4.264/2
\n" ); document.write( "X=2.132 ANS. FOR THE SIDE INCREASE.
\n" ); document.write( "PROOF:
\n" ); document.write( "28*2=(4+2.132)(7+2.132)
\n" ); document.write( "56=6.132*9.132
\n" ); document.write( "56=56 \n" ); document.write( "

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