texmath-0.9.4: tests/writers/binomial_coefficient.eqn
bold {C} ( n , k ) = {bold {C}} sub k sup n = {} sub n {bold {C}} sub k = left ( n / k right ) = {n !} over {k ! ^ ( n \[u2212] k ) !}
bold {C} ( n , k ) = {bold {C}} sub k sup n = {} sub n {bold {C}} sub k = left ( n / k right ) = {n !} over {k ! ^ ( n \[u2212] k ) !}