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Byju's Answer
Standard IX
Mathematics
Addition and Subtraction of Surds
For x=2√3+2...
Question
For
x
=
2
√
3
+
2
√
2
,
if
1
x
is
√
3
−
√
2
m
then
m
is :
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Solution
x
=
2
√
3
+
2
√
2
1
x
=
1
2
√
3
+
2
√
2
Rationalising the denominator, we get
1
x
=
1
2
√
3
+
2
√
2
×
√
3
−
√
2
√
3
−
√
2
=
√
3
−
√
2
2
(
3
−
2
)
=
√
3
−
√
2
2
Hence,
m
=
2
.
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