Khan/khan-exercises — pull request #54580 by petercollingridge (2013-07-18 11:23:48+00:00)
Title: 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.