Let f(x)=7-sqrt(x^(2)+1) and g(x)=x-4 . Then (f@g)(2)= (f@g)(x)=

<p> <br />1. The composition of functions \( f \) and \( g \) is given by \( (f \circ g)(x) = f(g(x)) \). <br />2. For \( (f \circ g)(2) \), we substitute \( x = 2 \) into \( g(x) \) to get \( g(2) \). Then, we substitute this result into \( f(x) \) to get \( f(g(2)) \). <br />3. For \( (f \circ g)(x) \), we substitute \( g(x) \) into \( f(x) \) to get the expression for \( (f \circ g)(x) \).<br /></p>