Matematika

Pertanyaan

diketahui f(x) =x² + 6x + 8 g(x) = x + 2

Tentukan
A. (f+g) (x)
B. (f-g) (x)
C. (f.g) (x)
D. (f:g) (x)

1 Jawaban

  • f(x) = x^2 +6x + 8
    g(x) = x +2

    a). (f+g) (x) = X^2 + 6x + 8 +x +2 = x^2 +7x + 10
    b). (f-g) (x) = x^2 + 6x + 8 -(x+2) = x^2 +6x+8-x-2 = x^2 + 5x + 6
    c). (f.g)(x) = (X^2+6x+8)(x+2) = x^3+2x^2+6x^2+12x+8x+16=x^3+8x^2+20x+16
    d).(f/g)(x) = (x^2+6x+8)/(x+2)= x + 4

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