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Byju's Answer
Standard XIII
Mathematics
Relations between Roots and Coefficients : Higher Order Equations
If a2a+p=b2b+...
Question
If
a
2
(
a
+
p
)
=
b
2
(
b
+
p
)
=
c
2
(
c
+
p
)
,
where
a
,
b
,
c
,
p
∈
R
,
then value of
a
b
+
b
c
+
c
a
is
A
−
p
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B
k
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C
0
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D
p
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Solution
The correct option is
C
0
Let
a
2
(
a
+
p
)
=
b
2
(
b
+
p
)
=
c
2
(
c
+
p
)
=
k
a
3
+
p
a
2
−
k
=
0
b
3
+
p
b
2
−
k
=
0
c
3
+
p
c
2
−
k
=
0
So,
x
3
+
p
x
2
−
k
=
0
has roots as
a
,
b
,
c
, then
a
b
+
b
c
+
c
a
=
coefficient of
x
coefficient of
x
3
∴
a
b
+
b
c
+
c
a
=
0
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0
Similar questions
Q.
If
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2
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a
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)
=
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+
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, then
Q.
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