计算 (1)x2 (x-2y)(x+2y)-(x2+y)(x2-y); (2)( 发布时间:2017-05-17 18:54 │ 来源:www.tikuol.com 题型:计算题 问题: 计算(1)x2 (x-2y)(x+2y)-(x2+y)(x2-y);(2)( a+1)( a-1)( a2+1)( a4+1)(a8+1)