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Byju's Answer
Standard XII
Mathematics
Infinite GP
Determine the...
Question
Determine the nature of the roots of the equation
2
x
2
−
5
x
−
1
=
0
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Solution
This is in the form of
a
x
2
+
b
x
+
c
=
0
. The co-efficient are
a
=
2
,
b
=
−
5
,
c
=
−
1
△
=
b
2
−
4
a
c
,
△
=
(
−
5
)
2
−
4
(
2
)
(
−
1
)
,
△
=
25
+
8
,
△
=
33
∴
△
>
0
. Therefore, roots are real and distinct
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