Thread: Rectangle problem??

I have never known how to do these problems and there are plenty on the exam.


A rectangle has an area of (x^3-6x^2+10x-8) square meters and a width of (x-4) meters. What is its length?

How would I set this problem up???

Originally Posted by tiffieblah

I have never known how to do these problems and there are plenty on the exam.


A rectangle has an area of (x^3-6x^2+10x-8) square meters and a width of (x-4) meters. What is its length?

How would I set this problem up???

If we just forget about the for a minute, I'm sure you know that the equation for the area of a rectangle is

Putting your above values into that question, we get the equation:



Or

What we have now is just a simple polynomial division question.

There are several methods to solve this, I would suggest Synthetic Division, but use whatever method you have been taught.

Hope this helps

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