If and I is the identity matrix of order 3, show that A3 = pl + qA + rA2

If and I is the identity matrix of order 3, show that $A^{3}$ = pl + qA + r $A^{2}$

Mixed-up sentence exercise

Put the parts in order to form a sentence. When you think your answer is correct, click on "Check" to check your answer. If you get stuck, click on "Hint" to find out the next correct part.