Даю 20 баллов! (2a-1)^3-8a^3+5. При а=-2. Created by MikaKamila. algebra-ru

Даю 20 баллов! (2a-1)^3-8a^3+5. При а=-2...

MikaKamila @MikaKamila

July 2022 1 2 Report

Даю 20 баллов!
(2a-1)^3-8a^3+5. При а=-2

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ShirokovP

Verified answer

Упрощаем сначала
(2a - 1)^3 - 8a^3 + 5 =
= (8a^3 - 12a^2 + 6a - 1) - 8a^3 + 5 =
= 8a^3 - 12a^2 + 6a - 1 - 8a^3 + 5 =
= - 12a^2 + 6a + 4

Подставляем
a = - 2 ==>
- 12*(- 2)^2 + 6*(-2) + 4 = - 48 - 12 + 4 = - 60 + 4 = - 56

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v rezultate vypolneniya nekoego operatora peremennye poluchili sleduyushie znacheniya

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MikaKamila August 2022 | 0 Ответы

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