Answer
$$\frac{3+5x}{x^2}$$
Work Step by Step
In order to add fractions, we must first make sure that the denominators are the same. After we create like denominators, we add the numerators together to get the new fraction. Doing this, we find:
$$ \frac{3}{x^2}+\frac{5}{x}\\ \frac{3}{x^2}+\frac{5x}{x^2}\\ \frac{3+5x}{x^2}$$