Ola Gerard

(2x^3+x^2-5x+2)/(x + 2) = 2x^2 - 3x + 1

d^2 = 9 - 8 = 1

d = 1

x2 = (3 + 1)/4 = 1

x3 = (3 - 1)/4 = 1/2

P(x) = (x + 2)*(x - 1)*(x - 1/2)

pronto