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Byju's Answer
Standard XII
Mathematics
Properties of Determinants
If x 5 2×2 -1...
Question
If
{
(
(
x
)
5
)
2
×
(
2
)
−
1
}
1
3
=
x
3
,
then find the value of
x
.
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Solution
{
(
(
x
)
5
)
2
×
(
2
)
−
1
}
1
3
=
x
3
Taking cube on both the sides,
⇒
⎧
⎨
⎩
{
(
(
x
)
5
)
2
×
(
2
)
−
1
}
1
3
⎫
⎬
⎭
3
=
{
x
3
}
3
⇒
(
(
x
)
10
×
(
2
)
−
1
)
=
x
9
⇒
(
(
x
)
10
×
1
2
=
x
9
⇒
(
x
)
10
÷
(
x
)
9
=
2
⇒
x
=
2
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