Предмет: Алгебра, автор: nastya1900

упростите выражение (a+6)^2-3a(4-5a) и найдите его значение при a= -1/4

Ответы

Автор ответа: NataliaPt

0

а2(а в квадрате)
1) раскрываем скобки
а2+12а+36-12а +15а2
2) приводим подобные, получаем:
16а2+36
3) подставляе значение а
получаем
16*1/16(что есть 1)+36= 1+36=37

Автор ответа: nastya1900

0

в ответе должно получиться 37

Автор ответа: NataliaPt

0

Извиняюсь за свою ошибку , изменила =)

Автор ответа: NataliaPt

0

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