no goals
R : Type u
S : Type ?u.65885
A : Type v
inst✝⁷ : CommRing R
inst✝⁶ : CommRing S
inst✝⁵ : Ring A
inst✝⁴ : Algebra R A
inst✝³ : Algebra R S
inst✝² : Algebra S A
inst✝¹ : IsScalarTower R S A
inst✝ : Nontrivial R
x : R
⊢ ↑(aeval (↑(algebraMap R A) x)) (X - ↑C x) = 0
rw [_root_.map_sub, aeval_X, aeval_C, sub_self]