问题
填空题
化简:(a-2b)3-(2b-a)2n+1÷(a-2b)2n-2=______.
答案
(a-2b)3•(2b-a)2n+1÷(a-2b)2n-2,
=-(a-2b)3•(a-2b)2n+1÷(a-2b)2n-2,
=-(a-2b)3+2n+1-2n+2,
=-(a-2b)6.
化简:(a-2b)3-(2b-a)2n+1÷(a-2b)2n-2=______.
(a-2b)3•(2b-a)2n+1÷(a-2b)2n-2,
=-(a-2b)3•(a-2b)2n+1÷(a-2b)2n-2,
=-(a-2b)3+2n+1-2n+2,
=-(a-2b)6.