The problem asks to simplify the expression $\sin^2 x + \sin x \cos x$.

1. Problem Description

The problem asks to simplify the expression $\sin^2 x + \sin x \cos x$.

2. Solution Steps

We can factor out $\sin x$ from both terms.

$\sin^2 x + \sin x \cos x = \sin x (\sin x + \cos x)$

There are no further simplifications possible without additional context or constraints.

3. Final Answer

$\sin x (\sin x + \cos x)$