congr
case mk.mk
c : ℤα
z✝¹ w✝¹ z✝ w✝ : ℤ
⊢ ↑z✝¹ * ↑z✝ + ↑z✝¹ * ↑w✝ * complexα + ↑z✝ * complexα * ↑w✝¹ + (↑w✝ * complexα * ↑w✝¹ - ↑w✝ * ↑w✝¹ * 2) =
    ↑z✝¹ * ↑z✝ + ↑z✝¹ * ↑w✝ * complexα + ↑z✝ * complexα * ↑w✝¹ + ↑w✝ * (complexα - 2) * ↑w✝¹
case mk.mk.e_a
c : ℤα
z✝¹ w✝¹ z✝ w✝ : ℤ
⊢ ↑w✝ * complexα * ↑w✝¹ - ↑w✝ * ↑w✝¹ * 2 = ↑w✝ * (complexα - 2) * ↑w✝¹