Matematika

Pertanyaan

Jika f(x) =2x²-8x dan g(x) = 2(3-x², maka 2g(x) - 3f(x) =
Jika f(x) =2x²-8x dan g(x) = 2(3-x²,  maka 2g(x)  - 3f(x) =

1 Jawaban

  • 2g(x) - 3f(x)
    = 2 (2 (3 - x²) - 3 (2x² - 8x)
    = 2 (6 - 2x²) - 3 (2x² - 8x)
    = 12 - 4x² - 6x² + 24x
    = -10x² + 24x + 12  |x-1|
    = 10x² - 24x - 12 (D)


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