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Manipal Entrance Test 2019 Math Paper
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© examsnet.com
Question : 61
Total: 70
In
Δ
A
B
C
,
b
−
c
r
1
+
c
−
a
r
2
+
a
−
b
r
3
is equal to
0
a
b
c
a
+
b
+
c
a
b
+
b
c
+
c
a
Validate
Solution:
Now,
b
−
c
r
1
+
c
−
a
r
2
+
a
−
b
r
3
[
(
b
−
c
)
(
s
−
a
)
+
(
c
−
a
)
(
s
−
b
)
+
(
a
−
b
)
(
s
−
c
)
]
Δ
=
0
© examsnet.com
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