lean_workbook_plus_17293
ProvedProve that for any real numbers .
Preamble
import Mathlib.Analysis.Complex.Basic
Formal statement
theorem lean_workbook_plus_17293 (a b c : ℝ) : a ^ 2 - a * b - a * c + b ^ 2 - b * c + c ^ 2 ≥ 0 := by sorry
Source
Prove that for any real numbers .
import Mathlib.Analysis.Complex.Basic
theorem lean_workbook_plus_17293 (a b c : ℝ) : a ^ 2 - a * b - a * c + b ^ 2 - b * c + c ^ 2 ≥ 0 := by sorry