Multiplying and dividing rational expressions 4

Questions in the form

(f1A / f2B) x BC / f3C or (f1A / f2B) x BC / f3A

Where A, B and C are in the form (x + K) and f1, f2, f3 are constants. Includes different combinations of numerators and denominators and multiplying or dividing. Solving requires cancelling two common factors and possibly a constant.

e.g. ![multiplying and dividing rational expressions 4](https://f.cloud.github.com/assets/219302/820344/9950e2a6-efc2-11e2-9b23-4a3b87c26c32.png)