lean_workbook_plus_56763

Proved

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

Calculate $(5+2\sqrt{6})^3 + (5-2\sqrt{6})^3$

Preamble

import Mathlib.Analysis.Complex.Basic

Formal statement

theorem lean_workbook_plus_56763 : (5 + 2 * Real.sqrt 6)^3 + (5 - 2 * Real.sqrt 6)^3 = 970   :=  by sorry

Source