SSC CPO SI and ASI 2012 Paper

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Question : 131 of 200

Marks: +1, -0

If x

^{2}

+ 1 = 2x, then the value of

x^{4}+\ {1}/{\ {x^{2}}/{x^{2}-3 x+1}}

is

0
1
2
-2

Solution:

(4)

x^{2}+1=2 x

⇒(x-1)^{2}=0 ⇒ x=1

Therefore,

{x^{4}+ {1}/{x^{2}}}/{x^{2}-3 x+1}= {1+1}/{1-3+1}

= {2}/{-1}=-2

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