El profesor se sorprenderá mucho al ver tu solución correcta😉
/2*x\ -6*x + 27*tan|---| = 0 \ 3 /
x1 = 25.6577093046401
x2 = -20.8874549288235
x3 = -6.11722464727706
x4 = -39.8867899319535
x5 = 0.0
x6 = -11.2082889894909
x7 = -25.6577093046401
x8 = 16.0841565940338
x9 = 6.11722464727706
x10 = -16.0841565940338
x11 = 68.2308544301431
x11 = 68.2308544301431