∀ {R : Type u_1} {M : Type u_2} [inst : CommRing R] [inst_1 : AddCommGroup M] [inst_2 : Module R M]
  [inst_3 : Module Rᵐᵒᵖ M] [inst_4 : IsCentralScalar R M] (n : ℕ) (x : TrivSqZeroExt R M),
  Semiring.npow (n + 1) x = Semiring.npow n x * x