To solve the problem from the uploaded image:

Problem:

We are given two functions:

1. $f(x) = x + 1$
2. $g(x) = x^2$

We need to determine $(g \circ f)(x)$, which represents the composition $g(f(x))$.

Steps to Solve:

1. Start with $f(x) = x + 1$.
   Substituting $f(x)$ into $g(x)$, we have:
   $g(f(x)) = g(x + 1)$

2. Since $g(x) = x^2$, replacing $x$ with $x + 1$ gives:
   [ g(x + 1) = (x + 1)^2 \