El profesor se sorprenderá mucho al ver tu solución correcta😉
2 5*x 2 305*x - ---- + 130*(170 - x) - (170 - x) = 0 2
a*x^2 + b*x + c = 0
D = b^2 - 4 * a * c =
(515)^2 - 4 * (-7/2) * (-6800) = 170025
x1 = (-b + sqrt(D)) / (2*a)
x2 = (-b - sqrt(D)) / (2*a)
suma
______ ______ 515 5*\/ 6801 515 5*\/ 6801 --- - ---------- + --- + ---------- 7 7 7 7
=
1030/7
producto
/ ______\ / ______\ |515 5*\/ 6801 | |515 5*\/ 6801 | |--- - ----------|*|--- + ----------| \ 7 7 / \ 7 7 /
=
13600/7
13600/7
______ 515 5*\/ 6801 x1 = --- - ---------- 7 7
______ 515 5*\/ 6801 x2 = --- + ---------- 7 7
x2 = 5*sqrt(6801)/7 + 515/7