Find the sum of the roots of the polynomial P(x)=2x3−8x2+5x−1P(x) = 2x^3 - 8x^2 + 5x - 1P(x)=2x3−8x2+5x−1.
444
−4-4−4
2.52.52.5
−2.5-2.5−2.5