1. You asked for LaTeX code to represent mathematical expressions. 2. LaTeX is a typesetting system widely used for mathematical and scientific documents. 3. To write math in LaTeX, use dollar signs $...$ for inline math and double dollar signs $$...$$ for display math. 4. For example, the quadratic formula is written as: $$x = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}$$ 5. To write fractions, use \frac{numerator}{denominator}. 6. To write square roots, use \sqrt{expression}. 7. To write powers, use ^{exponent}. 8. If you want a specific LaTeX code for a problem, please provide the problem statement. This explanation covers the basics of LaTeX math code.