1. The problem is to simplify the expression $x2-3$. 2. First, recognize that $x2$ means $x \times 2$, so the expression can be rewritten as $2x - 3$. 3. This is a linear expression in terms of $x$ and cannot be simplified further without knowing the value of $x$. 4. Therefore, the simplified form of the expression is $2x - 3$.