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Byju's Answer
Standard XII
Mathematics
Addition Rule of Differentiation
If x=2-√3, th...
Question
If x = 2 -
√
3
, then find the value of
X
2
−
1
X
2
Open in App
Solution
If
x
=
2
−
√
3
x
2
−
1
x
2
=
(
x
+
1
x
)
(
x
−
1
x
)
=
(
2
−
√
3
+
1
2
−
√
3
)
(
2
−
√
3
−
1
2
−
√
3
)
=
(
4
+
3
−
4
√
3
+
1
2
−
√
3
)
(
4
+
3
−
4
√
3
−
1
2
−
√
3
)
=
(
8
−
4
√
3
)
(
6
−
4
√
3
)
(
2
−
√
3
)
2
=
4
(
/
2
−
√
3
)
(
6
−
4
√
3
)
(
2
−
√
3
)
=
8
(
3
−
2
√
3
)
2
−
√
3
×
(
2
+
√
3
)
(
2
+
√
3
)
=
/
48
+
24
√
3
−
32
√
3
−
/
48
4
−
3
=
−
8
√
3
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17
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