If \( f: R \rightarrow R \) and \( g: R \rightarrow R \) are defined by \( f(x)=2 x+ \) 3 and \(....

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If \( f: R \rightarrow R \) and \( g: R \rightarrow R \) are defined by \( f(x)=2 x+ \)
\( \mathrm{P} \)
3 and \( g(x)=x^{2}+7 \), then the values of \( x \) such that \( g(f(x))=8 \) are
(1) 1
(2) -2
(3) -1
(4) 3


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