来自倪浩如的问题
因式分解:(x2-2x-2)(x2-2x+4)+9.
因式分解:(x2-2x-2)(x2-2x+4)+9.
1回答
2020-09-22 14:11
因式分解:(x2-2x-2)(x2-2x+4)+9.
因式分解:(x2-2x-2)(x2-2x+4)+9.
(x2-2x-2)(x2-2x+4)+9
=(x2-2x)2+2(x2-2x)+1
=(x2-2x+1)2
=(x-1)4.