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Byju's Answer
Standard IX
Mathematics
Laws of Exponents for Real Numbers
If x is a pos...
Question
If x is a positive real number and
x
2
=
2
,
t
h
e
n
x
3
=
A
√
2
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B
2
√
2
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C
3
√
2
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D
4
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Solution
The correct option is
B
2
√
2
x
2
=
2
⇒
x
=
√
2
∴
x
3
=
(
√
2
)
3
=
√
2
×
√
2
×
√
2
=
2
×
√
2
=
2
√
2
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Similar questions
Q.
If x is a positive real number and x
2
= 2, then x
3
=
(a)
2
(b) 2
2
(c) 3
2
(d) 4