MCQ
When simplified $\left(x^{-1}+y^{-1}\right)^{-1}$ is equal to
- Axy
- Bx + y
- ✓$\frac{x y}{x+y}$
- D$\frac{x+y}{x y}$
✓
Answer
Correct option: C.
$\frac{x y}{x+y}$
c
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