Problema Solution

What is the area of a rectangle with a width of 4n-1 and a length of 9n? Give an answer in the simplest form.

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What is the area of a rectangle with a width of 4n-1 and a length of 9n? Give an answer in the simplest form.

Solution:

Area = width*length = (4n-1)*9n= 36n^2-9n