If 
=3, find the values of 
and
.
(i) Given that,
x - 
= 3
Squaring both sides, we get
(x - 
)2 = (3)2
x2 - 2 × x × 
+ (
)2 = 9
x2 - 2 + 
= 9
x2 + 
= 11
(ii) Squaring both sides, we get
(x2 + 
)2 = (11)2
(x2)2 + 2 × x2 × 
+ (
)2 = 121
x4 + 2 + 
= 121
x4 + 
= 119
8