An Olympic pool is rectangular with a length of 50 meters, a width of 25 meters, and a depth of 3 meters. Your client wants to build an Olympic-style pool with a similar shape, but with a length of 30 meters. What are the 2 different ways to calculate the perimeter of the new pool?

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Polynomials

Try substituting 1. You will get 6 and not 0. Try other real values also. What About -2? Let us check.