Предмет: Алгебра, автор: Бульдок111

если f(x)=x²-x , то найдите 3f(1)+f(2)+f(-1)

Ответы

Автор ответа: konstantsya

3

f(x)=x²-x

f(1)=1²-1 = 1-1 = 0
f(2)=2²-2 = 4-2 = 2
f(-1)=(-1)²-(-1) = 1+1 = 2

3f(1)+f(2)+f(-1) = 3*0+2+2 = 4

Ответ: 4

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