Предмет: Математика, автор: ar3778628

4x-4(-x-5) при x=-3 плиззз​

Ответы

Автор ответа: eyggen
0

Ответ:

-4

Пошаговое объяснение:

4x-4(-x-5)=4х+4х+20=8х+20

якщо х=-3, то 8х+20=-24+20=-4


1959schell: -(-3)-5=3-5=-2
1959schell: 4×(-3)=-12
eyggen: какой ответ?
1959schell: -2×4=-8
1959schell: -12-(-8)=-12+8=-4
1959schell: а стоп
1959schell: ответ правильный
eyggen: ответ -4, тогда почему не правильно?
1959schell: я ошибся
eyggen: ничего, бывает)
Автор ответа: mariaalekseevn15
0

Ответ:

-4

Пошаговое объяснение:

4х+4х+20

8х+30

Если х = - 3, то подставляем =>

8*(-3)+20= - 24 + 20= - 4

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