El profesor se sorprenderá mucho al ver tu solución correcta😉
a*x^2 + b*x + c = 0
D = b^2 - 4 * a * c =
(-1210)^2 - 4 * (20) * (-12980) = 2502500
x1 = (-b + sqrt(D)) / (2*a)
x2 = (-b - sqrt(D)) / (2*a)
______ 121 5*\/ 1001 x1 = --- - ---------- 4 4
______ 121 5*\/ 1001 x2 = --- + ---------- 4 4
x2 = 121/4 + 5*sqrt(1001)/4
suma
______ ______ 121 5*\/ 1001 121 5*\/ 1001 --- - ---------- + --- + ---------- 4 4 4 4
=
121/2
producto
/ ______\ / ______\ |121 5*\/ 1001 | |121 5*\/ 1001 | |--- - ----------|*|--- + ----------| \ 4 4 / \ 4 4 /
=
-649
-649