Math CentralQuandaries & Queries


Question from a student:

I have a question that continues to lead me to the answer x/(x - 1) but according to my math book, the answer should be 1/(x - 1).

Who is right? Who is wrong?

Here is the question:

(x^2 - 6x - 27)/(x^2 - 11x + 18) DIVIDED by (x^3 + 2x^2 - 3x)/(x^2 - 2x)

Hi there.

First, I factored the polynomials. Then I multiplied by the reciprocal of the denominator instead of dividing by the fraction. The book is right.

Hope this helps,
Stephen La Rocque.


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