Ответ:
Пошаговое объяснение:
m²+ 6mn + 9n²– m – 3n =
= (m²+6mn+9n²) - (m+3n) =
= (m + 3n)² - (m+3n) =
= (m+3n) * (m + 3n-1)
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Ответ:
Пошаговое объяснение:
m²+ 6mn + 9n²– m – 3n =
= (m²+6mn+9n²) - (m+3n) =
= (m + 3n)² - (m+3n) =
= (m+3n) * (m + 3n-1)