SSC CGL 31 Aug 2016 Paper

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Question : 56 of 100

Marks: +1, -0

If

{2p}/{p^2-2p+1}

=

1/4

, then the value of p +

1/p

will be

8
10
12
None of these

Solution:

{2p}/{p^2-2p+1}

=

1/4

⇒

{p^2-2p+1}/{2p}

= 4
⇒

p^2/p - {2p}/p + 1/p

= 8
⇒ p +

1/p

= 8 + 2 = 10

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