lean_workbook_plus_9175
Proved(*) Prove that .
Preamble
import Mathlib.Analysis.Complex.Basic
Formal statement
theorem lean_workbook_plus_9175 (a b c: ℝ) : a ^ 2 + b ^ 2 + c ^ 2 ≥ a * b + a * c + b * c := by sorry
Source
(*) Prove that .
import Mathlib.Analysis.Complex.Basic
theorem lean_workbook_plus_9175 (a b c: ℝ) : a ^ 2 + b ^ 2 + c ^ 2 ≥ a * b + a * c + b * c := by sorry