Can someone me ? < 3 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?

The width of the pool, w = 7x^2, and the area of the pool, A = 7x^3 - 42x^2.

Since A = lw, l = A / w.l = (7x^3 - 42x^2)/7x^2 = x - 6.

Therefore, the length of the pool is x - 6.

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