Try putting it in quotes so we pass it directly to the formula (instead of Coda trying to evaluate it):
LaTeX::Math("The\ quadratic\ formula\ is\ \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}")
Example:
Try putting it in quotes so we pass it directly to the formula (instead of Coda trying to evaluate it):
LaTeX::Math("The\ quadratic\ formula\ is\ \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}")
Example: