document.write( "Question 301468: The area of rectangle ABCD is \"+20+cm%5E2+\". If the width is 7 cm more than 3 times the length, what are the dimensions of the triangle?\r
\n" ); document.write( "\n" ); document.write( "Use a polynomial equation to solve the problem\r
\n" ); document.write( "\n" ); document.write( "It would also be helpful if you included the initial equation so I could understand it better.
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Algebra.Com's Answer #216166 by checkley77(12844)\"\" \"About 
You can put this solution on YOUR website!
AREA=L*W
\n" ); document.write( "W=3L+7
\n" ); document.write( "20=L(3L+7)
\n" ); document.write( "20=3L^2+7L
\n" ); document.write( "3L^2+7L-20)=0
\n" ); document.write( "(3L-5)(X+4)=0
\n" ); document.write( "3L-5=0
\n" ); document.write( "3L=5
\n" ); document.write( "L=5/3 ANS.
\n" ); document.write( "W=3*5/3+7=5+7=12 ANS.
\n" ); document.write( "PROOF:
\n" ); document.write( "20=5/3*12
\n" ); document.write( "20=5*4
\n" ); document.write( "20=20
\n" ); document.write( "
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