El profesor se sorprenderá mucho al ver tu solución correcta😉
a*x^2 + b*x + c = 0
D = b^2 - 4 * a * c =
(-1)^2 - 4 * (-1) * (2 + a) = 9 + 4*a
x1 = (-b + sqrt(D)) / (2*a)
x2 = (-b - sqrt(D)) / (2*a)
suma
____________________________ ____________________________ ____________________________ ____________________________ 4 / 2 2 /atan2(4*im(a), 9 + 4*re(a))\ 4 / 2 2 /atan2(4*im(a), 9 + 4*re(a))\ 4 / 2 2 /atan2(4*im(a), 9 + 4*re(a))\ 4 / 2 2 /atan2(4*im(a), 9 + 4*re(a))\ \/ (9 + 4*re(a)) + 16*im (a) *cos|---------------------------| I*\/ (9 + 4*re(a)) + 16*im (a) *sin|---------------------------| \/ (9 + 4*re(a)) + 16*im (a) *cos|---------------------------| I*\/ (9 + 4*re(a)) + 16*im (a) *sin|---------------------------| 1 \ 2 / \ 2 / 1 \ 2 / \ 2 / - - - ---------------------------------------------------------------- - ------------------------------------------------------------------ + - - + ---------------------------------------------------------------- + ------------------------------------------------------------------ 2 2 2 2 2 2
=
-1
producto
/ ____________________________ ____________________________ \ / ____________________________ ____________________________ \ | 4 / 2 2 /atan2(4*im(a), 9 + 4*re(a))\ 4 / 2 2 /atan2(4*im(a), 9 + 4*re(a))\| | 4 / 2 2 /atan2(4*im(a), 9 + 4*re(a))\ 4 / 2 2 /atan2(4*im(a), 9 + 4*re(a))\| | \/ (9 + 4*re(a)) + 16*im (a) *cos|---------------------------| I*\/ (9 + 4*re(a)) + 16*im (a) *sin|---------------------------|| | \/ (9 + 4*re(a)) + 16*im (a) *cos|---------------------------| I*\/ (9 + 4*re(a)) + 16*im (a) *sin|---------------------------|| | 1 \ 2 / \ 2 /| | 1 \ 2 / \ 2 /| |- - - ---------------------------------------------------------------- - ------------------------------------------------------------------|*|- - + ---------------------------------------------------------------- + ------------------------------------------------------------------| \ 2 2 2 / \ 2 2 2 /
=
-2 - re(a) - I*im(a)
-2 - re(a) - i*im(a)
____________________________ ____________________________ 4 / 2 2 /atan2(4*im(a), 9 + 4*re(a))\ 4 / 2 2 /atan2(4*im(a), 9 + 4*re(a))\ \/ (9 + 4*re(a)) + 16*im (a) *cos|---------------------------| I*\/ (9 + 4*re(a)) + 16*im (a) *sin|---------------------------| 1 \ 2 / \ 2 / x1 = - - - ---------------------------------------------------------------- - ------------------------------------------------------------------ 2 2 2
____________________________ ____________________________ 4 / 2 2 /atan2(4*im(a), 9 + 4*re(a))\ 4 / 2 2 /atan2(4*im(a), 9 + 4*re(a))\ \/ (9 + 4*re(a)) + 16*im (a) *cos|---------------------------| I*\/ (9 + 4*re(a)) + 16*im (a) *sin|---------------------------| 1 \ 2 / \ 2 / x2 = - - + ---------------------------------------------------------------- + ------------------------------------------------------------------ 2 2 2
x2 = i*((4*re(a) + 9)^2 + 16*im(a)^2)^(1/4)*sin(atan2(4*im(a, 4*re(a) + 9)/2)/2 + ((4*re(a) + 9)^2 + 16*im(a)^2)^(1/4)*cos(atan2(4*im(a), 4*re(a) + 9)/2)/2 - 1/2)