document.write( "Question 360493: Solving a word problem using a quadratic equation with rational roots\r
\n" ); document.write( "\n" ); document.write( "The length of a rectangle is 5 m more than twice its width, and the area of the rectangle is 42 m^2. Find the dimensions of the rectangle. \r
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Algebra.Com's Answer #257205 by ewatrrr(24785) $\"\"$ $\"About$

You can put this solution on YOUR website!


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document.write( "Hi,
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document.write( "let x represent the width, length then is (2x+5)
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document.write( "x(2x+5) = 42m^2
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document.write( "2x^2 + 5x - 42m^2 = 0
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document.write( "(2x - 7)(x + 6) = 0
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document.write( "x + 6 = 0
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document.write( "x = -6 cannot use
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document.write( "2x - 7 = 0
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document.write( "x = 7/2m 
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document.write( "width is 7/2m and the length is (7 + 5) = 12m
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document.write( "checking our answer
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document.write( "7/2m * 12m = 42m^2 \n" );
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