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Dragon1011 Dragon1011
  • 23-07-2016
  • Mathematics
Answered

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?

Verified Answer :

Panoyin
Panoyin Panoyin
  • 23-07-2016

A = lw
       7x³ - 42x² = l(7x²)
7x²(x) - 7x²(6) = l(7x²)
        7x²(x - 6) = l(7x²)
              7x²         7x²
               x - 6 = l

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