(6/(x-6))+(2(x+6))
\(\dfrac{6}{x-6}+2(x+6)\\ =\dfrac{6}{x-6}+\dfrac{2(x+6)(x-6)}{x-6}\\ =\dfrac{6+2(x^2-36)}{x-6}\\ =\dfrac{2x^2 - 66}{x-6}\\ \)
