lean_workbook_plus_67979

Proved

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

Prove that $\sqrt{7+4\sqrt{3}} = 2+\sqrt{3}$ .

Preamble

import Mathlib.Analysis.Complex.Basic

Formal statement

theorem lean_workbook_plus_67979 : √(7 + 4 * Real.sqrt 3) = 2 + Real.sqrt 3   :=  by sorry

Source