The term
perfect square is used in
mathematics in two meanings:
- a positive integer which is the square of some other integer, i.e. can be written in the form n^{2} for some integer n. See square number.
- an algebraic expression that can be factored as the square of some other expression, e.g. a^{2} ± 2ab + b^{2} = (a ± b)^{2}.
This is not the same as a magic square.
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