Suatu suku banyak dibagi x-2 bersisa 11, dibagi x+1 bersisa -4, jika dibagi x²-x-2 bersisa...

Polinomial

• Dibagi (x-2) sisa 11, f(2) = 11
• Dibagi (x+1) sisa -4, f(-1) = -4
..
x²-x-2 = 0
(x+1)(x-2)
x=-1 x=2
..
S(x) = ax+b
S(x) = f(x)
..
f(-1) : -a+b = -4
f(2) : 2a+b = 11
——————— --
-3a = -15 → a = 5
-5+b = -4 → b = 1
maka :
S(x) = 5x+1