I want to start training to become an Olympic swimmer. I currently have a square pool in my backyard but it’s not the same dimensions as a Olympic size pool. I need your help to redesign my pool. Let’s say the sides are x meters long. I want to increase the length by 5 meters. And decreases the width by 3 meters. Write an expression for the length and width of the new pool? If the current area of the pool of it is 10x10 meters what would be the area of the new pool? If my current pool has an area of 144 square meters what is the area of the new pool?

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A:

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A: Length=x+7width=x+3 Now perimeter is, P=2length+width=2x+7+x+3=22x+10=4x+20

Polynomials

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