5. Hitung nilai P(0) jika P(x) = -x^3 + 2x^2 + 5x – 1.
Jawab:
P(0) = -0^3 + 2(0)^2 + 5(0) – 1 = 0 + 0 + 0 – 1 = -1
6. Tentukan hasil dari P(x) = 2x^2 – x + 1 jika x = 4.
Jawab:
P(4) = 2(4)^2 – 4 + 1 = 2(16) – 4 + 1 = 32 – 4 + 1 = 29
7. Jika P(x) = x^2 + 3x + 2, hitung nilai P(-1).
Jawab:
P(-1) = (-1)^2 + 3(-1) + 2 = 1 – 3 + 2 = 0
