The given expression is a polynomial. To solve or simplify it, we can factor out the greatest common factor (GCF) from the terms. The GCF of the terms \(10x^2\) and \(5x\) is \(5x\). By factoring out \(5x\), we can simplify the expression.
Step 1: Identify the Expression
We start with the polynomial expression given by
\[
10x^2 + 5x.
\]
Step 2: Factor the Expression
To simplify the expression, we factor out the greatest common factor (GCF) from the terms. The GCF of \(10x^2\) and \(5x\) is \(5x\). Thus, we can rewrite the expression as:
\[
10x^2 + 5x = 5x(2x + 1).
\]
Final Answer
The factored form of the expression is
\[
\boxed{5x(2x + 1)}.
\]