lean_workbook_plus_9465
OpenProve that using Pascal's triangle.
Preamble
import Mathlib.Analysis.Complex.Basic
Formal statement
theorem lean_workbook_plus_9465 (n : ℕ) : choose (n + 2) 4 = choose n 2 + 2 * choose n 3 + choose n 4 := by sorry
Source
Prove that using Pascal's triangle.
import Mathlib.Analysis.Complex.Basic
theorem lean_workbook_plus_9465 (n : ℕ) : choose (n + 2) 4 = choose n 2 + 2 * choose n 3 + choose n 4 := by sorry