Question

URGENTE Dado o polinômio P(x)=x^3 - 5×^2 + ×-1, calcule. a) P(-1) b) P(3

Answer 1

P(-1) = (-1)^3 - 5(-1)^2 + (-1) -1
P(-1) = -1 - 5 (1) + (-2)
P(-1) = -1 -5 -2
P(-1) = - 8

P(3) = 3^3 -5 (3)^2 + 3 -1
P(3) = 27 - 5 . 9 + 2
P(3) = 27 - 45 + 2
P(3) = -16