Question

Calcula P (-1)+P (2)si P(x)=3×-5×+4

Answer 1

P(0) = 3(-1)-1=-4

0=x+1

x=-1

P(1) = 3(0)-1=-1

1=x+1

x=0

P(2)= 3(1)-1=2

2=x+1

x=1

P(0)+P(1)+P(2)=-4+(-1)+2= Rta= -3