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Byju's Answer
Standard X
Mathematics
Nature of Roots
p2× 2+p 2-q 2...
Question
p
2
x
2
+
(
p
2
-
q
2
)
x
-
q
2
=
0
Open in App
Solution
Given:
p
2
x
2
+
(
p
2
−
q
2
)
x
−
q
2
=
0
On
comparing it with
a
x
2
+
b
x
+
c
=
0
,
we get:
a
=
p
2
,
b
=
(
p
2
−
q
2
)
and
c
=
−
q
2
Discriminant
D
is
given
by
:
D
=
(
b
2
−
4
a
c
)
=
(
p
2
−
q
2
)
2
−
4
×
p
2
×
(
−
q
2
)
=
p
4
−
2
p
2
q
2
+
q
4
+
4
p
2
q
2
=
p
4
+
2
p
2
q
2
+
q
4
=
(
p
2
+
q
2
)
2
> 0
Hence, the roots of the equation are real.
R
oots
α
and
β
are given by:
α
=
−
b
+
D
2
a
=
−
(
p
2
−
q
2
)
+
(
p
2
+
q
2
)
2
2
p
2
=
2
q
2
2
p
2
=
q
2
p
2
β
=
−
b
−
D
2
a
=
−
(
p
2
−
q
2
)
−
(
p
2
+
q
2
)
2
2
p
2
=
−
2
p
2
2
p
2
=
−
1
Hence, the roots of the equation are
q
2
p
2
and
−
1
.
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0
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Q.
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