Предмет: Алгебра, автор: ulana082325

Обчислити значення виразу: а в 2 степени - 4а + 4, якщо а = 3.​

Ответы

Автор ответа: sergeevaolga5
1

Ответ:

1

Объяснение:

a^2-4a+4=a^2-2a*2=2^2=(a-2)^2\\\\a=3\\\\(a-2)^2=(3-2)^2=1^2=1

Автор ответа: OblivionFire
0

a^2-2ab+b^2=(a-b)^2\\a^2-4a+4=(a-2)^2\\a=3\Rightarrow\\(3-2)^2=1^2=\bf1

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