分解因式: (1)ax2y-axy2 (2)(x2+9)2-36x2.
问题描述:
分解因式:
(1)ax2y-axy2
(2)(x2+9)2-36x2.
答
(1)原式=axy(x-y);
(2)原式=(x2+9-6x)(x2+9+6x),
=(x+3)2(x-3)2.