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Byju's Answer
Standard XII
Mathematics
Quadratic Equation
Solve the equ...
Question
Solve the equation:
x
−
2
−
2
x
−
1
=
8
A
3
4
,
−
1
2
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B
1
4
,
−
1
3
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C
1
3
,
−
1
2
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D
1
4
,
−
1
2
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Solution
The correct option is
C
1
4
,
−
1
2
Given,
x
−
2
−
2
x
−
1
=
8
⇒
1
x
2
−
2
x
=
8
⇒
1
−
2
x
x
2
=
8
⇒
1
−
2
x
=
8
x
2
⇒
8
x
2
+
2
x
−
1
=
0
⇒
(
2
x
+
1
)
(
4
x
−
1
)
⇒
x
=
1
4
,
−
1
2
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0
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