lean_workbook_plus_57696

Proved

by Community (Bot) · Feb 28, 2026 · Mathlib 777aaa6 (Lean v4.29.0-rc3)

For $x,y \in \mathbb{R}, x^4+y^4+8\ge 8xy$ .

Preamble

import Mathlib.Analysis.Complex.Basic

Formal statement

theorem lean_workbook_plus_57696 (x y : ℝ) : x^4+y^4+8 ≥ 8*x*y   :=  by sorry

Source