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Byju's Answer
Standard IX
Mathematics
Identities for Irrational Numbers
2√4 express i...
Question
2
3
√
4
express in pure surd form as
A
1
√
16
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B
3
√
18
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C
3
√
32
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D
4
√
42
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Solution
The correct option is
B
3
√
32
Given,
2
3
√
4
On solving the above surd, we get
2
3
√
4
=
2
3
√
2
2
2
3
√
4
=
2
(
2
2
3
)
......
[
∵
a
√
b
=
b
1
a
]
2
3
√
4
=
2
(
1
+
2
3
)
......
[
∵
a
m
×
a
n
=
a
m
+
n
]
2
3
√
4
=
2
5
3
2
3
√
4
=
3
√
2
5
2
3
√
4
=
3
√
32
Hence, option
(
c
)
is correct answer.
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