问题 解答题

(x2-1)2-(x2-1)(x+5)

答案

(x2-1)2-(x2-1)(x+5),

=(x2-1)(x2-1-x-5),

=(x+1)(x-1)(x2-x-6),

=(x+1)(x-1)(x+2)(x-3).

单项选择题
单项选择题