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IBPS Clerk Mains 2017 Paper
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© examsiri.com
Question :
70 of 178
Marks:
+1
,
-0
x
2
+
2
x
–
35
=
0
(
i
i
)
y
2
+
15
y
+
56
=
0
if x > y
if x
>
y
if x < y
if x
<
y
if x = y or no relation can be established between xand y
Validate
Solution:
(b)(i)
x
2
+
2
x
–
35
=
0
x
2
+
7
x
–
5
x
–
35
=
0
x
(
x
+
7
)
–
5
(
x
+
7
)
=
0
(
x
–
5
)
(
x
+
7
)
=
0
x = 5, –7
(ii)
y
2
+
15
y
+
56
=
0
y
2
+
7
y
+
8
y
+
56
=
0
y
(
y
+
7
)
+
8
(
y
+
7
)
=
0
(y + 8) (y + 7) = 0
y = – 8, –7
x > y
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