CPM Homework Help : A2C Problem 7-187

Perform each of the following matrix operations without using a calculator. If the operation is impossible, explain why. Homework Help ✎

Hint (a):

What have you learned about matrix operations so far?

Hint (c):

What must be true about the dimensions of two matrices in order to multiply them?

Hint (b):

Multiply through by the 2 before you add.

Hint (d):

What must be true about the dimensions of two matrices in order to add them?