m^2-4n^2+2m-4m (因式分解)_数学解答

m^2-4n^2+2m-4m (因式分解)

人气：151 ℃　时间：2020-03-28 08:49:09

解答

m^2-4n^2+2m-4n
=(m^2-4n^2)+(2m-4n)
=(m+2n)(m-2n)+2(m-2n)
=(m-2n)[(m+2n)+2]
=(m-2n)(m+2n+2)