lean_workbook_plus_12030

Proved

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

For $x = 1$ , the first equation becomes $1 - y^{3} = 6(1 - y^{2})$

Preamble

import Mathlib.Analysis.Complex.Basic

Formal statement

theorem lean_workbook_plus_12030 (x y : ℝ) (hx : x = 1) : x - y^3 = 6 * (x - y^2) ↔ 1 - y^3 = 6 * (1 - y^2)   :=  by sorry

Source