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C = [1 4 -2; -4 -1 6]
A = [8 -5 1; 1 9 0]

S = C + A

R = C - A

B = [7 1 -3; 2 9 -2; -3 2 0]

P = C * B

T = P * 5

(A + C) * B^2 * (A + C)'

a = [1 1 -2]
B = [2 5 0; -6 4 -1; 8 1 -8]
c = [-2; 8; 7]

a * B * c

A = [1.3 2.5 -2.5; 2.4 6.5 4.1; -1.1 1.2 2.9]
b = [0.1; 9.3; 5.6]

x = A\b

A = load('matr.txt');
b = load('rside.txt');

x = A\b;

save sol.txt x