(m+2n-p)(m-2n+p)平方差公式怎么算?_数学解答

(m+2n-p)(m-2n+p)平方差公式怎么算?

人气：390 ℃　时间：2020-05-19 11:22:50

解答

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