将多项式m2-4n2-4n-1分解因式得_.
问题描述:
将多项式m2-4n2-4n-1分解因式得______.
答
m2-4n2-4n-1,
=m2-(4n2+4n+1),
=m2-(2n+1)2,
=(m+2n+1)(m-2n-1).
故答案为:(m+2n+1)(m-2n-1).