What is a miss on this?Example: Removing the GCF from the PolynomialFigure each term totally3•x•x + 3•3•x

Question

Hello

I have two questions.

1.  What is a miss on this:  Example:  Removing the GCF from the Polynomial 3x3 + 9x

Figure each term totally 3*x*x + 3*3*x

2.  What is a miss on this?  (x -2)/(x + 1) - 5/(x - 5) The denominators here are x + 1 and x + 5

Answer 1

3 x^2 + 9 x    The greatest common factor is 3x

3x(x + 3)      The miss would be x+3?  I think that is what is left over...

 

(x-2)       5

------- - -------

(x + 1)   (x - 5)

 

(x-2)(x-5) - 5(x+1)

---------------------

     (x+1)(x-5)