问题
解答题
因式分解
(1)a2-4
(2)x3y+4x2y2+4xy3.
答案
(1)a2-4=(a+2)(a-2);
(2)x3y+4x2y2+4xy3
=xy(x2+4xy+4y2)
=xy(x+2y)2.
因式分解
(1)a2-4
(2)x3y+4x2y2+4xy3.
(1)a2-4=(a+2)(a-2);
(2)x3y+4x2y2+4xy3
=xy(x2+4xy+4y2)
=xy(x+2y)2.