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DRDO Multi tasking staff Model paper 10
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© examsnet.com
Question : 69
Total: 100
If
x
2
−
2
x
−
47
=
0
then find the value of
(
x
−
8
)
2
+ 1/(x – 8)
2
.
194
196
-194
-16
Validate
Solution:
Tips & Tricks
x
2
−
2
x
−
47
=
0
⇒
x
2
−
2
x
−
48
=
−
1
⇒ (x - 8)(x + 6) = -1
⇒
x
+
6
=
−
1
x
−
8
⇒
x
+
6
+
1
x
−
8
=
0
⇒
x
−
8
+
1
x
−
8
=
−
14
⇒
(
x
−
8
)
2
+
1
(
x
−
8
)
2
+
2
=
196
⇒
(
x
−
8
)
2
+
1
(
x
−
8
)
2
=
194
© examsnet.com
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