问题
解答题
分解因式:
(1)3x3-12xy2
(2)a2-6a-16.
答案
(1)3x3-12xy2
=3x(x2-4y2)
=3x(x+2y)(x-2y);
(2)a2-6a-16=(a+2)(a-8).
分解因式:
(1)3x3-12xy2
(2)a2-6a-16.
(1)3x3-12xy2
=3x(x2-4y2)
=3x(x+2y)(x-2y);
(2)a2-6a-16=(a+2)(a-8).