lean_workbook_plus_75704

Proved

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

Prove that\n\n $(a+b)(a^2+b^2)(a^3+b^3) \le 4(a^6+b^6)$

Preamble

import Mathlib.Analysis.Complex.Basic

Formal statement

theorem lean_workbook_plus_75704 (a b : ℝ) : (a+b)*(a^2+b^2)*(a^3+b^3) ≤ 4 * (a^6 + b^6)   :=  by sorry

Source