Matematika

Pertanyaan

1. f(x) = x + 2
2. f(x) = 3x + 12
Mohon bantuannya?

1 Jawaban

  • f(x) = x + 2
    f(x) = 3x + 12

    x + 2 = 3x + 12
    x - 3x = 12 - 2
    -2x = 10
    x = 10/-2
    x = -5

    maka
    f(-5) = x + 2
    = -5 + 2 = -3

    f(-5) = 3x +12
    = 3(-5) + 12
    = -15 + 12
    = -3

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