+1678 An expression is well-defined if you can compute its value without any illegal operations. Examples of expressions that are [i]not[/i] well-defined include $1/0$ and $\sqrt{-10}$. For what values of $x$ is the expression
\frac{\sqrt{4x + 1 + 8 - 3x}}{\sqrt{2x} - 5}
well-defined?
