Помогите с математикой. Матрицы.

 A  
matrix([[ 4,  0,  2], 
        [-1,  1, -3], 
        [ 5,  1,  2]]) 
 
B 
matrix([[-1,  1,  2], 
        [ 0,  1, -2], 
        [ 5, -5,  0]]) 
 
A*A + B*A +3*B 
matrix([[ 28,   8,  17], 
        [-31,   0, -24], 
        [ 69, -17,  36]])