How can I prove that (A × B) − (C × D) = (A − C) × B ∪ A × (B − D)?
How can I prove (A × B) − (C × D) = (A − C) × B ∪ A × (B − D)?
איך אני יכול להוכיח ש(A × B) − (C × D) = (A − C) × B ∪ A × (B − D)?
איך אני יכול להוכיח (A × B) − (C × D) = (A − C) × B ∪ A × (B − D)?