问题
解答题
因式分解
(1)3a2-6ab
(2)x2(a-b)+4y2(b-a)
答案
(1)3a2-6ab=3a(a-2b);
(2)x2(a-b)+4y2(b-a)
=(a-b)(x2-4y2)
=(a-b)(x+2y)(x-2y).
因式分解
(1)3a2-6ab
(2)x2(a-b)+4y2(b-a)
(1)3a2-6ab=3a(a-2b);
(2)x2(a-b)+4y2(b-a)
=(a-b)(x2-4y2)
=(a-b)(x+2y)(x-2y).