Предмет: Алгебра, автор: Alexander9

Упростите выражение (2 + а)^2 - а(а+5). Найдите его значение при а= -0.3

Ответы

Автор ответа: polina14sid

0

(2+a)-a (a+5)= 2+a-a^2-5
при а=-0, 3 выражение равно -4, 2

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