你好！(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祝你学习愉快O(∩_∩)O哈！
原式=[m+(2n-p)][m-(2n-p)]=m²-(2n-p)²=m²-4n²+4np-p²
(m+2n-p)(m-2n+p)=[m+(2n-p)][m-(2n-p)]=M^2-(2n-p)^2
