lean_workbook_plus_71271
ProvedLet be real. Prove that:
Preamble
import Mathlib.Analysis.Complex.Basic
Formal statement
theorem lean_workbook_plus_71271 (a b c : ℝ) : a^2 + b^2 + c^2 + 2 * (a * b + b * c + c * a) ≥ 0 := by sorry
Source
Let be real. Prove that:
import Mathlib.Analysis.Complex.Basic
theorem lean_workbook_plus_71271 (a b c : ℝ) : a^2 + b^2 + c^2 + 2 * (a * b + b * c + c * a) ≥ 0 := by sorry