0 votes 0 votes closed with the note: Duplicate Shadan Karim asked Jan 4, 2019 closed Jan 4, 2019 by Shadan Karim Shadan Karim 338 views comment Share Follow See all 5 Comments See all 5 5 Comments reply Show 2 previous comments Shubhgupta commented Jan 4, 2019 reply Follow Share $A^{2}= A.A= A.(B.A)= (A.B).A=B.A=A$ Same for B $B^{2}= B.B= B.(A.B)= (B.A).B=A.B=B$ Now its simply $A+B$ 1 votes 1 votes Lakshman Bhaiya commented Jan 4, 2019 reply Follow Share @Shadan Karim This question is already add in GO, why you ask again? 0 votes 0 votes Shadan Karim commented Jan 4, 2019 reply Follow Share @Lakshman Patel RJIT closed 0 votes 0 votes Please log in or register to add a comment.