题目int ((2x-5))^5dx=-|||-A dfrac (1)(8)((2x-5))^4+C-|||-B dfrac (1)(12)((2x-5))^4+C-|||-C dfrac (1)(12)((2x-5))^6+C-|||-D ○ dfrac (1)(8)((2x-5))^6+C题目解答答案