因式分解(3m+2n)的二次方-(3m-2n)的二次方-60m_数学解答

因式分解(3m+2n)的二次方-(3m-2n)的二次方-60m

人气：148 ℃　时间：2019-12-20 03:56:20

解答

(3m+2n)^2-(3m-2n)^2-60m
=(3m+2n+3m-2n)(3m+2n-3m+2n)-60m
=6m*4n-60m
=24mn-60m
=12m(2n-5)