问题
解答题
分解因式:
(1)2a3-4a2b+2ab2;(2)x4-y4
答案
(1)2a3-4a2b+2ab2,
=2a(a2-2ab+b2),
=2a(a-b)2;
(2)x4-y4,
=(x2+y2)(x2-y2),
=(x2+y2)(x+y)(x-y).
分解因式:
(1)2a3-4a2b+2ab2;(2)x4-y4
(1)2a3-4a2b+2ab2,
=2a(a2-2ab+b2),
=2a(a-b)2;
(2)x4-y4,
=(x2+y2)(x2-y2),
=(x2+y2)(x+y)(x-y).