SOLUTION: The area of a rectangle is represented by n^2-n-12. If the length of the rectangle is represented by n+3, express the width of the rectangle in terms of n.

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Question 390083: The area of a rectangle is represented by n^2-n-12. If the length of the rectangle is represented by n+3, express the width of the rectangle in terms of n.
Found 3 solutions by unlockmath, mananth, ewatrrr:
Answer by unlockmath(1688) About Me  (Show Source):
You can put this solution on YOUR website!
Hello,
We know that area is calculated by length times height, right. So we can write this equation as:
n^2-n-12
This can be factored as:
(n-4)(n+3)
Width can be (n-4)
RJ
www.math-unlock.com

Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
The area of a rectangle is represented by n^2-n-12. If the length of the rectangle is represented by n+3, express the width of the rectangle in terms of n.
Area = n2^-n-12
length = n+3
..
width = n^2-n-12/(n+3)
width = (n-4)(n+3)/(n+3)
width = (n-4)
...
m.ananth@hotmail.ca

Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!


Hi,        

Area of a rectangle = Length*Width

question states***

 A = n^2-n-12 = L*W       Question states L = (n+3)

    factoring

    (n+3)(n-4)= L*W  therefore W can be expressed as (n-4)