lean_workbook_plus_1476
ProvedProve that for any real numbers .
Preamble
import Mathlib.Analysis.Complex.Basic
Formal statement
theorem lean_workbook_plus_1476 (x y z: ℝ) : (x + y + z) ^ 2 ≤ 3 * (x ^ 2 + y ^ 2 + z ^ 2) := by sorry
Source
Prove that for any real numbers .
import Mathlib.Analysis.Complex.Basic
theorem lean_workbook_plus_1476 (x y z: ℝ) : (x + y + z) ^ 2 ≤ 3 * (x ^ 2 + y ^ 2 + z ^ 2) := by sorry