The teacher will be very surprised to see your correct solution 😉
-3*x + 2 (3 - 5*x) *(5*x + 1) = 0
sum
-1/5
=
-1/5
product
-1/5
=
-1/5
-1/5
x1 = 6.29826938466122 - 0.778006780272731*i
x2 = -0.2
x3 = 5.31967927954584 - 0.834228804631997*i
x4 = 9.2542888133863 - 0.674126930362499*i
x5 = 4.34829956034638 - 0.913903814696188*i
x6 = 8.26667784762692 - 0.701758536557422*i
x7 = 11.2337364051086 - 0.631006879825481*i
x8 = 3.39241514472977 - 1.04055206047632*i
x9 = 10.2434173911543 - 0.650905848180479*i
x10 = 7.28107463971403 - 0.735473130848078*i
x10 = 7.28107463971403 - 0.735473130848078*i