(vector A + vector B )cross*(vector A - vector B)
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(vector A^2)-(vectorB ^2)
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(Vector A + Vector B)×(Vector A - Vector B)
= Vector A (Vector A - Vector B) + Vector B ( Vector A - Vector B)
= Vector A ^2 - Vector B^ 2
= Vector A (Vector A - Vector B) + Vector B ( Vector A - Vector B)
= Vector A ^2 - Vector B^ 2
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