Jika f(x) = 3x² + 2x – 1, maka f(-2) = ​

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Jika f(x) = 3x² + 2x – 1, maka f(-2) = ​

Jawaban:

7

Penjelasan dengan langkah-langkah:

f(x) = 3x² + 2x – 1, maka f(-2) = ?

f(–2) = 3(–2)²+2(–2)–1

= 3(4)-4-1

= 12 – 5

= 7

Jawab:

f(-2) = 7

Penjelasan dengan langkah-langkah:

Dik: f(x) = 3x^{2} + 2x - 1\\Dit: f(-2) = ?\\Jawab:\f(x) = 3x^{2} + 2x - 1\\f(-2) = 3(-2)^{2} + 2(-2) - 1 = 3(4) - 4 - 1 = 12 - 4 - 1 = 8 - 1 = 7