Ответ:
Объяснение:
m²-6mn+9n²-m³+27n³=
=m²-6mn+9n²-(m³-(3n)³=
=(m-3n)²-(m-3n)(m²+3mn+9n²)=
=((m-3n)(m-3n-m²-3mn-9n²)=
=(m-3n)(-m²-9n²+m-3mn)
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Ответ:
Объяснение:
m²-6mn+9n²-m³+27n³=
=m²-6mn+9n²-(m³-(3n)³=
=(m-3n)²-(m-3n)(m²+3mn+9n²)=
=((m-3n)(m-3n-m²-3mn-9n²)=
=(m-3n)(-m²-9n²+m-3mn)