计算(m^2+mn+n^2)(m^2-mn+n^2)

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计算(m^2+mn+n^2)(m^2-mn+n^2)计算(m^2+mn+n^2)(m^2-mn+n^2)计算(m^2+mn+n^2)(m^2-mn+n^2)(m^2+mn+n^2)(m^2-mn+n^

计算(m^2+mn+n^2)(m^2-mn+n^2)
计算(m^2+mn+n^2)(m^2-mn+n^2)

计算(m^2+mn+n^2)(m^2-mn+n^2)
(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