
Donald W. answered 03/01/22
Experienced and Patient Tutor for Math and Computer Science
a/b can be ((x+2)(x-6))/((x+2)(x+4)) and c/d can be ((x-3)(x-6))/((x-3)(x+4)). Multiplying them out, we get a/b = (x^2-4x-12)/(x^2+6x+8) and c/d = (x^2-9x+18)/(x^2+x-12).