Question

#462376 If A and B are two matrices such that AB = B and BA= A then A? + B2 equals A 2AB ® 2BA C A+B CORRECT ANSWER D AB SOLUTION Given, AB=B and BA= A Now, A2 + B2 = A A+BB = A(BA) + B(AB) = (AB)A+(BA)B = BA + AB= A + B

Answer 1