Предмет: Математика, автор: nastya20081504

(Х^2-9):(х+3) пж помогите

Ответы

Автор ответа: bena20193

Ответ:

Пошаговое объяснение:

по формуле (a²-b²)=(a-b)(a+b)

(x²-9):(х+3)=(x²-3²):(х+3)=(x-3)(x+3):(x+3)=x-3

сокращение возможно при х≠-3

Автор ответа: iramazurk

Ответ:

х - 3

Пошаговое объяснение:

(х² - 9) : (х + 3) =

(х² - 9)/(х + 3) = если х ≠ -3

(х - 3)*(х + 3) / (х + 3) = х - 3

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