lean_workbook_plus_33338

Proved

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

Solve for $x$ : $4x+3 = 12x^2 + 7x$

Preamble

import Mathlib.Analysis.Complex.Basic

Formal statement

theorem lean_workbook_plus_33338 (x : ℝ) (hx : 4*x+3 = 12*x^2 + 7*x) : x = (-1 + Real.sqrt 17)/8 ∨ x = (-1 - Real.sqrt 17)/8   :=  by sorry

Source