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The width w of a rectangular swimming pool is 7x2. The area A of the pool is 7x3 – 42x2. What is an expression for the length of the pool?

The width w of a rectangular swimming pool is 7x2. The area A of the pool is 7x3 – 42x2. What is an expression for the length of the pool?
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The width w of a rectangular swimming pool is 7x2. The area A of the pool is 7x3 – 42x2. What is an expression for the length of the pool?

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User Foysal Osmany
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8.4k points

1 Answer

2 votes
A = lw
7x³ - 42x² = l(7x²)
7x²(x) - 7x²(6) = l(7x²)
7x²(x - 6) = l(7x²)
7x² 7x²
x - 6 = l
answered
User Corey Waldon
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8.2k points
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