document.write( "Question 1074413: Lorna wants to enclose a rectangular area next to the river. She only has 400 ft. of
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Algebra.Com's Answer #689090 by josgarithmetic(39617)\"\" \"About 
You can put this solution on YOUR website!
If x is one dimension and y is the other, and if y is the side opposite the river bank, then:\r
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\n" ); document.write( "\n" ); document.write( "If substituting for y,
\n" ); document.write( "\"x%28400-2x%29=1500\"\r
\n" ); document.write( "\n" ); document.write( "\"x%28200-x%29=750\"\r
\n" ); document.write( "\n" ); document.write( "\"200x-x%5E2-750=0\"\r
\n" ); document.write( "\n" ); document.write( "\"-x%5E2%2B200x-750=0\"\r
\n" ); document.write( "\n" ); document.write( "\"x%5E2-200x%2B750=0\"
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