问题
填空题
用幂的形式表示结果:(x-y)2(y-x)3(x-y)4=______.
答案
(x-y)2(y-x)3(x-y)4
=-(x-y)2(x-y)3(x-y)4
=-(x-y)9.
故答案为:-(x-y)9.
用幂的形式表示结果:(x-y)2(y-x)3(x-y)4=______.
(x-y)2(y-x)3(x-y)4
=-(x-y)2(x-y)3(x-y)4
=-(x-y)9.
故答案为:-(x-y)9.