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sawan rathi
from
,
Subject :
IMO
Class :
Class 8
If
= 4 then
=
A
B
C
D
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Ans 1:
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square all terms= x2 + 1/x2 +2=16 x2+1/x2=14 x-1/x=? square all = x2+1/x2 - 2 = ? x2-1/x2=14 thus- 14 -2 = 12 root of 12 is 2 root 3.
Asmi Raniga
from
Indian School Ghubra, Muscat
Class :
Class 8
square all terms= x2 + 1/x2 +2=16 x2+1/x2=14 x-1/x=? square all = x2+1/x2 - 2 = ? x2-1/x2=14 thus- 14 -2 = 12 root of 12 is 2 root 3.
Ans 2:
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(A)
Aryaman Agrawal
from
St. Francis School, Ghaziabad
Class :
Class 8
(A)
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