因式分解 (1)2a2b+4ab-6b (2)16x4-8x2y2+y4
问题描述:
因式分解
(1)2a2b+4ab-6b
(2)16x4-8x2y2+y4
答
(1)2a2b+4ab-6b,
=2b(a2+2a-3),
=2b(a+3)(a-1);
(2)16x4-8x2y2+y4,
=(4x2-y2)2,
=(2x+y)2(2x-y)2.