El profesor se sorprenderá mucho al ver tu solución correcta😉
2 2 (3*x + 5) + (3*x + 5)*(7*x - 4) - 12*(x - 4) = 0
a*x^2 + b*x + c = 0
D = b^2 - 4 * a * c =
(149)^2 - 4 * (18) * (-187) = 35665
x1 = (-b + sqrt(D)) / (2*a)
x2 = (-b - sqrt(D)) / (2*a)
suma
_______ _______ 149 \/ 35665 149 \/ 35665 - --- + --------- + - --- - --------- 36 36 36 36
=
-149 ----- 18
producto
/ _______\ / _______\ | 149 \/ 35665 | | 149 \/ 35665 | |- --- + ---------|*|- --- - ---------| \ 36 36 / \ 36 36 /
=
-187 ----- 18
-187/18
_______ 149 \/ 35665 x1 = - --- + --------- 36 36
_______ 149 \/ 35665 x2 = - --- - --------- 36 36
x2 = -sqrt(35665)/36 - 149/36