问题
解答题
分解因式:
(1)4x2-16
(2)4ab2-4a2b-b3
答案
(1)4x2-16,
=4(x2-4),
=4(x+2)(x-2);
(2)4ab2-4a2b-b3,
=-b(4a2-4ab+b2),
=-b(2a-b)2.
分解因式:
(1)4x2-16
(2)4ab2-4a2b-b3
(1)4x2-16,
=4(x2-4),
=4(x+2)(x-2);
(2)4ab2-4a2b-b3,
=-b(4a2-4ab+b2),
=-b(2a-b)2.