来自马海龙的问题
因式分解(1)3ax2+6axy+3ay2;(2)(x-2)(x-4)+1.
因式分解
(1)3ax2+6axy+3ay2;
(2)(x-2)(x-4)+1.
1回答
2020-09-1202:02
因式分解(1)3ax2+6axy+3ay2;(2)(x-2)(x-4)+1.
因式分解
(1)3ax2+6axy+3ay2;
(2)(x-2)(x-4)+1.
(1)3ax2+6axy+3ay2
=3a(x2+2xy+y2)
=3a(x+y)2;
(2)(x-2)(x-4)+1
=x2-6x+8+1
=x2-6x+9
=(x-3)2.