If lim x → c f ( x ) g ( x ) {\displaystyle \lim _{x\to c}{\frac {f(x)}{g(x)}}} approaches 0 0 {\displaystyle {\frac {0}{0}}} where f(x) and g(x) are two polynomials, try dividing the top and bottom by x − c . {\displaystyle x-c.}