Using suitable identity find the value of the following:-
(A)86^2
(B)79 x 84
Uzzyy Sheikh
Answers!
Ark Genius
Sept. 23, 2020, 6:51 p.m.
B:-79*84
Sol.(80-1)*(80 4) -using identity (Iv)(x a)(x b)=x*x (a b)x ab
80*80 (-1 4)80 (-1*4)
6400 (3)*80 (-4)
6400 240-4
6640-4=6636
Comment
Answer the question...
Ark Genius
B:-79*84
Sol.(80-1)*(80 4) -using identity (Iv)(x a)(x b)=x*x (a b)x ab
80*80 (-1 4)80 (-1*4)
6400 (3)*80 (-4)
6400 240-4
6640-4=6636
Sol.(80-1)*(80 4) -using identity (Iv)(x a)(x b)=x*x (a b)x ab
80*80 (-1 4)80 (-1*4)
6400 (3)*80 (-4)
6400 240-4
6640-4=6636
Comment
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