if x=2+√5 find the value of x^2-1/x^2
Answers
Answered by
0
HOPE THIS COULD HELP !!!
Attachments:
goelmannan:
Ans is 8√5
Then I think the question has got any mistake.....I have checked in all apps like doubtnut, photomath etc. but my one is correct......
Answered by
0
Step-by-step explanation:
answer is :--------------;;;;;;
given us x=2+√5.
find us x^2-1/x^2=(2+√5)^2-1/(2+√5)^2
={(2+√5)^4-1}/(2+√5)^2.
=(160+72√5)/(9+4√5).
I hope this is right and helpful for u.
Ans is 8√5
Similar questions