Cho lim x → x o f ( x ) = 2 ; lim x → x o g ( x ) = 3. lim x → x o [ 3 f ( x ) − 4 g ( x ) ] bằng

Cho \[\mathop {\lim }\limits_{x \to {x_o}} f(x) = 2;\,\mathop {\lim }\limits_{x \to {x_o}} g(x) = 3.\]\[\mathop {\lim }\limits_{x \to {x_o}} [3f(x) - 4g(x)]\] bằng