(x-1)(x-3)(x-5)(x-7)-9 因式分解

分类: 作业答案 • 2022-01-09 18:05:21

问题描述：

答

(x-1)(x-3)(x-5)(x-7)-9 =(x-1)(x-7)(x-3)(x-5)-9=(x²-8x+7)(x²-8x+15)-9=(x²-8x)²+22(x²-8x)+105-9=(x²-8x)²+22(x²-8x)+96=(x²-8x+6)(x²-8x+16)==(x²-8x+6...