Cevap :
Cevap:
Adım adım açıklama:
P(x)=x³+ax²+bx+c
P(1)=3 => 1+a+b+c=3 => a+b+c=2
P(2)=6=> 8+4a+2b+c=6 => 4a+2b+c=-2
P(3)=9 => 27+9a+3b+c=9 => 9a+3b+c=-18
P(4)=? => 64+16a+4b+c=?
4a+2b+c=-2
a+b+c=2
-_________
3a+b=-4
9a+3b+c=-18
4a+2b+c=-2
-__________
5a+b=-16
5a+b=-16
3a+b=-4
-_______
2a=-12 => a=-6 ve b=14 =>c=-6
P(x)=x³-6x²+14x-6
P(4)=64-6.16+14.4-6
P(4)=64-96+56-6
P(4)=18