Предмет: Математика, автор: German111111

Даны два многочлена

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Автор ответа: lstava

А +В = a² + ab -4b² +( - 2a² - 2ab + b²) = a² +ab - 4b² - 2a² - 2ab + b² = - a² - ab -3b²
A - B = a² + ab - 4b² - ( - 2a² - 2ab + b²) = a² + ab - 4b² + 2a² + 2ab - b² = 3a² + 3ab - 5b²

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