P(x) = H(x) (x² – x – 2) + sisa
P(x) = H(x) (x – 2)(x + 1) + Ax + B
P(2) = 2A + B
2⁴ – 3(2)³ – 5(2)² + 2 – 6 = 2A + B
➞ 2A + B = -32 ………………………………..(1)
P(-1) = -A + B
(-1)⁴ – 3(-1)³ – 5(-1)² – 1 – 6 = -A + B
➞ -A + B = -8 ……………………………………(2)
2A + B = -32
-A + B = -8 _
3A = -24
A = -8
2A + B = -32
-16 + B = -32
B = -16
Makara, sisa = -8x – 6