m^3+6m^2n+12mn^2+8n^3-27 因式分解
问题描述:
m^3+6m^2n+12mn^2+8n^3-27 因式分解
答
m^3+6m^2n+12mn^2+8n^3-27
=(m+2n)^3-27=(m+2n-3)((m+2n)^2+3(m+2n)+9)
=(m+2n-3)((m^2+4mn+4n^2+3m+6n+9)