if a=3 b=-4,what is the answer to the question a+2ab+1?选项A twenty_英语解答

if a=3 b=-4,what is the answer to the question a+2ab+1?
选项A twenty-eighth Btwenty-eight Cthirteen D eighteen(请说明理由）

人气：306 ℃　时间：2020-09-18 22:42:55

解答

题目意思是：如果A等于3,B等于4,A+2AB+1=几
选B,A是序数词,C,D不对