∀ {R : Type u_1} {S : Type u_4} [inst : CommRing R] [inst_1 : CommRing S] [inst_2 : Algebra R S] [IsDomain S]
  [IsDomain R] [Module.IsTorsionFree R S] {x : S}, IsConjRoot R 0 x → Function.Injective ⇑(algebraMap R S) → x = 0