mariejanelleb mariejanelleb

17-03-2021
Mathematics

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the bottom of a rectangular swimming pool has an area of 216 square feet. the length of the swimming pool is 6 ft longer than it's width. What are all possible width of the swimming pool?

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17-03-2021

216=x(x+6)
216=x^2+6x
X^2 + 6x - 216
(X+18)(x-12)
So the answers can be -18 or 12, but 12 is the only reasonable solution.

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