Answer
option a
Work Step by Step
Step 1: $\frac{1}{x}+\frac{2}{x^{2}}$
Step 2: $\frac{1\times x}{x \times x}+\frac{2\times 1}{x^{2} \times 1}$
Step 3: $\frac{x}{x^{2}}+\frac{2}{x^{2}}$
Step 4: $\frac{x+2}{x^{2}}$
Step 5: Therefore the answer is option a
