lean_workbook_plus_67437

Proved

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

Prove that $x^2y^4 + z^2x^4 \geq 2x^3y^2z$

Preamble

import Mathlib.Analysis.Complex.Basic

Formal statement

theorem lean_workbook_plus_67437 (x y z: ℝ) : x ^ 2 * y ^ 4 + z ^ 2 * x ^ 4 ≥ 2 * x ^ 3 * y ^ 2 * z   :=  by sorry

Source