问题
解答题
分解因式:
(1)2x2-8
(2)a3-4a(a-1)
答案
(1)2x2-8,
=2(x2-4),
=2(x+2)(x-2);
(2)a3-4a(a-1),
=a(a2-4a+4),
=a(a-2)2.
分解因式:
(1)2x2-8
(2)a3-4a(a-1)
(1)2x2-8,
=2(x2-4),
=2(x+2)(x-2);
(2)a3-4a(a-1),
=a(a2-4a+4),
=a(a-2)2.