lean_workbook_plus_34342

Proved

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

Find the non-negative values of $b$ that satisfy the equation $b(b+1)=0$ .

Preamble

import Mathlib.Analysis.Complex.Basic

Formal statement

theorem lean_workbook_plus_34342 (b : ℝ) (h : b * (b + 1) = 0) : b = 0 ∨ b = -1   :=  by sorry

Source