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Byju's Answer
Standard XI
Mathematics
Higher Order Equations
Total number ...
Question
Total number of values of
x
satisfying
(
√
3
+
1
)
2
x
+
(
√
3
−
1
)
2
x
=
2
3
x
is
Open in App
Solution
(
√
3
+
1
)
2
x
+
(
√
3
−
1
)
2
x
=
2
3
x
The above equation can be re-written as
(
√
3
+
1
)
2
x
+
(
√
3
−
1
)
2
x
=
(
2
√
2
)
2
x
⇒
(
√
3
+
1
2
√
2
)
2
x
+
(
√
3
−
1
2
√
2
)
2
x
=
1
⇒
(
sin
75
∘
)
2
x
+
(
cos
75
∘
)
2
x
=
1
∴
x
=
1
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