（a-2\1）²（a²+4\1）²（a+2\1）²

来源：学生作业学帮网编辑：学帮网时间：2024/05/26 17:34:27

[(a-1/2)(a+1/2)(a²+1/4)]²
=[(a²-1/4)(a²+1/4)]²
=(a的4次方-1/16)²
=a的8次方-1/8a的4次方+1/256