I want to ask about the cost of finding the solution of a n×n linear equation system by cramer's method, which means the number of operations needed to compute the solution using cramer's method. for example : 1) to find the cost of 2x2 system we need: cost= (3 Determinant-2x2) + (2 divisions) but (Determinant-2x2) = 2 multiple + 1 addition=3 //// total cost = 11 operations 2) to find the cost of 3x3 system we need: cost= (4 Determinant-3x3) + (3 divisions) but (Determinant-3x3) =(3 Determinant-2x2) + 3 multiple + 2 addition=14 and (Determinant-2x2) = 2 multiple + 1 addition=3 //// total cost = 59 operations 3) to find the cost of 4x4 system we need: cost= (5 Determinant-4x4) + (4 divisions) but (Determinant-4x4) =(4 Determinant-3x3) + 4 multiple + 3 additions total coast= 319 So what is the general formula for the computational cost of the solution of a n×n linear equation system using Cramer's method?