If f(x)=2 x+7 and g(x)=x^2+7, x \in R, then what are the values of x for which f \circ g(x)=25 ?

Correct Answer is : −√2,√2

UPSC NDA II 2010 Mathematics Paper

Question : 46 of 120

Marks: +1, -0

If f(x)=2x+7 and g(x)=x2+7,x∈R, then what are the values of x for which f∘g(x)=25 ?

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