a=2+√3 find the value of a-1/a
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MATHS
If a=2+
3
, then find the value of a a−
a
1
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ANSWER
Given that,
a=2+
3
Then, Value of
a−
a
1
=2+
3
−
2+
3
1
=2+
3
−
2+
3
1
×
2−
3
2−
3
onrationalize
=2+
3
−
4−3
(2−
3
)
=2+
3
−2+
3
=2
3
Hence, this is the answer
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