能!a^(2n+2)*b^(2n)*b^3=ab^(2n+2)*b=-1|5看不懂啊，详细点，谢谢不能详细点了，已经尽力了那第二步能讲一下道理吗，谢谢a^(2n+2)*b^(2n)*b^3=a^(2n+2)*b^(2n+3)=a^(2n+2)*b^(2n+2)*b=(ab)^(2n+2)*b