In the expression of (x + y)3, what is the sum of the powers of the third term?

7.1 – Matrix size = number of rows by number of columns Add/Subtract matrices = same size matrices Vector = one column or one row Equality = same size and values 7.2 Multiply matrices – column of first matrix = row of second matrix Ex: (3 X 3 ) ( 3 X 2) = ( 3 X 2) Ex: Multiply matrix and vector Matrix Multiplication = Not Commutative AB...