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The difference between any perfect square and its predecessor is given by the identity n 2 − (n − 1) 2 = 2n − 1.Equivalently, it is possible to count square numbers by adding together the last square, the last square's root, and the current root, that is, n 2 = (n − 1) 2 + (n − 1) + n.
Nicholas Schubring Saputra (born 24 February 1984) [1] [2] is an Indonesian actor and film producer.He first rose to prominence as Rangga in the 2002 hit film Ada Apa dengan Cinta?, a role he reprised in Ada Apa Dengan Cinta? 2 in 2016.