Solved

Simplify
- $\left( a ^ { - 1 } + b ^ { - 1 } \right) ^ { - 1 }$

Question 161

Multiple Choice

Simplify.
- $\left( a ^ { - 1 } + b ^ { - 1 } \right) ^ { - 1 }$

A) $\frac { a b } { a - b }$
B) $\frac { a b } { a }$
C) $\frac { a + b } { a b }$
D) $\frac { a b } { a + b }$

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