Answer
$\frac{2}{x(x+h)}$
Work Step by Step
Step 1. Perform operations to the numerator:
$\frac{-2}{x+h}-\frac{-2}{x}=\frac{-2x+2x+2h}{x(x+h)}=\frac{2h}{x(x+h)}$
Step 2. Use the above results in the original expression, we have:
$\frac{\frac{-2}{x+h}-\frac{-2}{x}}{h}=\frac{\frac{2h}{x(x+h)}}{h}=\frac{2}{x(x+h)}$
