import Mathlib

set_option maxHeartbeats 0

open BigOperators Real Nat Topology Rat

theorem algebra_manipexpr_apbeq2cceqiacpbceqm2 (a b c : ℂ) (h₀ : a + b = 2 * c)
  (h₁ : c = Complex.I) : a * c + b * c = -2 := by sorry