阅读判断。
This is my good friend. Her name is Lily. She is tall and thin. She is quiet. She has big eyes and long hair. She is ten years old. She likes white and blue. She likes Chinese very much. She is very friendly too.
理学的产生可以追溯到唐代反佛思潮及宋初儒学家的思想影响,正如钱穆先生所说:“治宋必始于唐。”这说明( )
若将2xn﹣81分解成(4x2+9)(2x+3)(2x﹣3),则n的值是____ .