Math, asked by blitzkrieg96, 7 months ago

a^2-1/a^2=7
find:-
1)a+1/a
2)a-1/a

Answers

Answered by Answers9999999

1

Answer:

given:-

a+1/a=7

to find:-

a2+1/a2

apply the identity

(a+1/a)2=a2+1/a2+2

(7)2=a2+1/a2+2

49-2=47=a2+1/a2

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