document.write( "Question 214721: Quadratics and complex numbers:Analyzing Quadratics in vertex form f(x)=(x-h)^2 \r
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\n" ); document.write( "\n" ); document.write( "The sides of a pool are given by x + 10 feet and x - 11 feet. If the area of the pool is 490 square feet, what are the dimensions of the pool?\r
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Algebra.Com's Answer #162198 by vleith(2983)\"\" \"About 
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\"AreaOfrectangle+=+Length+%2A+Width\"\r
\n" ); document.write( "\n" ); document.write( "Given dimensions are \"x+%2B+10\" feet and \"x+-+11\" feet and area = 490 square feet\r
\n" ); document.write( "\n" ); document.write( "\"%28x%2B10%29%2A%28x-11%29+=+490\"
\n" ); document.write( "\"x%5E2+-+11x+%2B+10x+-+110+=+490\"
\n" ); document.write( "\"x%5E2+-x+-110+=+490\"
\n" ); document.write( "\"x%5E2+-x+-+600+=+0\"
\n" ); document.write( "\"%28x-25%29%28x%2B24%29+=+0\"
\n" ); document.write( "x = 25
\n" ); document.write( "If x - 25, then x+10 = 35 and x-11 = 14
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