计算(m^2+mn+n^2)(m^2-mn+n^2)
问题描述:
计算(m^2+mn+n^2)(m^2-mn+n^2)
答
(m^2+mn+n^2)(m^2-mn+n^2)
=(m²+n²)²-(mn)²
=m^4+2m²n²+n^4-m²n²
=m^4+m²n²+n^4