Observe the following set of equations 1 + 3 = 2, square 1 + 3 + 5 = 3, square 1 + 3 + 5 + 7 = 4, according to this rule - 1-3-5-7. [2N-1] where n is positive Calculate the result

Observe the following set of equations 1 + 3 = 2, square 1 + 3 + 5 = 3, square 1 + 3 + 5 + 7 = 4, according to this rule - 1-3-5-7. [2N-1] where n is positive Calculate the result

-n^2