问题
解答题
分解因式
(1)4x2-1
(2)ax2+2ax+a.
答案
(1)4x2-1,
=(2x)2-12,
=(2x+1)(2x-1);
(2)ax2+2ax+a,
=a(x2+2x+1),
=a(a+1)2.
分解因式
(1)4x2-1
(2)ax2+2ax+a.
(1)4x2-1,
=(2x)2-12,
=(2x+1)(2x-1);
(2)ax2+2ax+a,
=a(x2+2x+1),
=a(a+1)2.