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lean_workbook_plus_53876

Proved

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

Finally, prove that (3a−b−2c)2≥0(3a - b - 2c)^2 \geq 0(3a−b−2c)2≥0 to conclude the proof.

Preamble
import Mathlib.Analysis.Complex.Basic
Formal statement
theorem lean_workbook_plus_53876 (a b c : ℝ) : (3 * a - b - 2 * c) ^ 2 ≥ 0   :=  by sorry
Source
https://huggingface.co/datasets/internlm/Lean-Workbook

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