lean_workbook_plus_4122
Proved\n
Preamble
import Mathlib.Analysis.Complex.Basic
Formal statement
theorem lean_workbook_plus_4122 (x y z : ℤ) : x^2 + y^2 = 2 * z^2 ↔ (x + y)^2 + (x - y)^2 = (2 * z)^2 := by sorry
Source
\n
import Mathlib.Analysis.Complex.Basic
theorem lean_workbook_plus_4122 (x y z : ℤ) : x^2 + y^2 = 2 * z^2 ↔ (x + y)^2 + (x - y)^2 = (2 * z)^2 := by sorry