document.write( "Question 706387: The width w of a rectangular swimming pool is 7x^2. The area A of the pool is 7x^3 – 42x^2. What is an expression for the length of the pool? \n" ); document.write( "
Algebra.Com's Answer #435129 by nerdybill(7384)\"\" \"About 
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The width w of a rectangular swimming pool is 7x^2. The area A of the pool is 7x^3 – 42x^2. What is an expression for the length of the pool?
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\n" ); document.write( "width(w) = 7x^2
\n" ); document.write( "Area(A) = 7x^3 – 42x^2 = 7x^2(x-6)
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\n" ); document.write( "Since:
\n" ); document.write( "Area = width*length
\n" ); document.write( "Area/width = length
\n" ); document.write( "or
\n" ); document.write( "[7x^2(x-6)]/[7x^2] = length
\n" ); document.write( "(x-6) = length
\n" ); document.write( "x-6 = length (this is what they're looking for)
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