The teacher will be very surprised to see your correct solution 😉
4 4 / 9 \ / 1 2\ 407 x*|---| *|1 - -----*x | = ---- \4*2/ \ 4*9/4 / 1000
sum
0.261989370809073 + 1.88285088498538 + 3.68924981464091 + -3.54797884837375 - 0.448254513354825*I + -3.54797884837375 + 0.448254513354825*I + -2.50854347149998 - 0.757788572988523*I + -2.50854347149998 + 0.757788572988523*I + 3.13947728465604 - 0.757793697424674*I + 3.13947728465604 + 0.757793697424674*I
=
0
product
0.261989370809073*1.88285088498538*3.68924981464091*(-3.54797884837375 - 0.448254513354825*I)*(-3.54797884837375 + 0.448254513354825*I)*(-2.50854347149998 - 0.757788572988523*I)*(-2.50854347149998 + 0.757788572988523*I)*(3.13947728465604 - 0.757793697424674*I)*(3.13947728465604 + 0.757793697424674*I)
=
1667.072 + 2.8421709430404e-14*I
1667.072 + 2.8421709430404e-14*i
x1 = 0.261989370809073
x2 = 1.88285088498538
x3 = 3.68924981464091
x4 = -3.54797884837375 - 0.448254513354825*I
x5 = -3.54797884837375 + 0.448254513354825*I
x6 = -2.50854347149998 - 0.757788572988523*I
x7 = -2.50854347149998 + 0.757788572988523*I
x8 = 3.13947728465604 - 0.757793697424674*I
x9 = 3.13947728465604 + 0.757793697424674*I
x9 = 3.13947728465604 + 0.757793697424674*i
x1 = -2.50854347149998 + 0.757788572988523*i
x2 = -3.54797884837375 + 0.448254513354825*i
x3 = -2.50854347149998 - 0.757788572988523*i
x4 = 3.13947728465604 + 0.757793697424674*i
x5 = 3.13947728465604 - 0.757793697424674*i
x6 = 3.68924981464091
x7 = 1.88285088498538
x8 = 0.261989370809073
x9 = -3.54797884837375 - 0.448254513354825*i
x9 = -3.54797884837375 - 0.448254513354825*i