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Byju's Answer
Standard X
Mathematics
Arithmetic Progression
if x+1/x =2 t...
Question
if x+1/x =2 then x16+1/x16 is equal to gives answer
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Solution
x
+
1
x
=
2
⇒
x
+
1
x
2
=
2
2
{
on
squaring
both
sides
}
⇒
x
2
+
1
x
2
+
2
=
4
⇒
x
2
+
1
x
2
=
2
⇒
x
2
+
1
x
2
2
=
4
{
On
squaring
both
sides
}
⇒
x
4
+
1
x
4
+
2
=
4
⇒
x
4
+
1
x
4
=
2
⇒
x
4
+
1
x
4
2
=
4
{
on
squaring
both
sides
}
⇒
x
8
+
1
x
8
+
2
=
4
⇒
x
8
+
1
x
8
=
2
⇒
x
8
+
1
x
8
2
=
4
{
on
squaring
both
sides
}
⇒
x
16
+
1
x
16
+
2
=
4
⇒
x
16
+
1
x
16
=
2
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Similar questions
Q.
If
x
+
1
x
=
2
, then
x
16
+
1
x
16
is equal to
Q.
(x − y) (x + y) (x
2
+ y
2
) (x
4
+ y
4
) is equal to
(a) x
16
− y
16
(b) x
8
− y
8
(c) x
8
+ y8
(d) x
16
+ y
16