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24-06-2017
Mathematics

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The width w of a rectangular swimming pool is 7 * 2. The area A of the pool is 7x^3 – 42x^2. What is an expression for the length of the pool? Show your work.Please show your work.

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mathmate mathmate

25-06-2017

I suspect the width is 7x^2 (please double-check).
If that's the case,
the length of the pool is
L=(7x^3-42x^2)/(7x^2)
=7x^3/(7x^2)-42x^2/(7x^2)
=x-6

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