lean_workbook_plus_16622
ProvedLet and be real numbers. Prove that .
Preamble
import Mathlib.Analysis.Complex.Basic
Formal statement
theorem lean_workbook_plus_16622 (a b c : ℝ) : (a + b + c) ^ 2 ≥ 3 * (a * b + b * c + a * c) := by sorry
Source
Let and be real numbers. Prove that .
import Mathlib.Analysis.Complex.Basic
theorem lean_workbook_plus_16622 (a b c : ℝ) : (a + b + c) ^ 2 ≥ 3 * (a * b + b * c + a * c) := by sorry