3 ms·Can't edit anymore, it should be P1 + P2 = C1 + C2 - 2K 2K = C1 + C2 - (P1 + P2) etc...by klingonopera 7y agoCan't edit anymore, it should be P1 + P2 = C1 + C2 - 2K 2K = C1 + C2 - (P1 + P2) etc...