fungsi f(x) dibagi (x-1) sisanya 3 9 sedangkan jika dibagi (x-2) siaanya 4 . Jika f(x) dibagi dengan x^2-3x+2 sisanya adalah . . .

Bab Polinomial
Matematika SMA Kelas XI

x - 1 = 0
x = 1 → 3

x - 2 = 0
x = 2 → 4

f(x) = ax + b

f(1) = a + b = 3
f(2) = 2a + b = 4
------------------------ -
-a = -1
a = 1

a + b = 3
b = 3 - 1
b = 2

jadi, sisanya = x + 2

f(1) = 3
f(2) = 4

(1-2)S(X) = (3-4)X + (1×4 - 2×3)
(-1)S(X) = (-1)X + (4 - 6)
-S(X) = -X + (2)
S(X) = X - 2