Answer :

Given


We need to prove A2 + A = A (A + I).


Let us evaluate the LHS and the RHS one at a time.


To find the LHS, we will first calculate A2.


We know A2 = A × A





Now, the LHS is A2 + A.





To find the RHS, we will first calculate A + I.





Now, the RHS is A(A + I).





Thus, A2 + A = A (A + I).


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