Perform the indicated operation and write your answer with positive integer exponents.
-$$\frac { m ^ { - 1 } - n ^ { - 1 } } { m ^ { - 1 } + n ^ { - 1 } } \cdot \frac { m + n } { m - n }$$
A) $- 1$
B) $\frac { m n } { m + n }$
C) 1
D) $\frac { \mathrm { m } - \mathrm { n } } { \mathrm { m } }$

Question

Quizplus · Accepted Answer

The expression simplifies to $-1$ after performing the operations and simplifying the exponents.

Perform the Indicated Operation and Write Your Answer with Positive m−1−n−1m−1+n−1⋅m+nm−n\frac { m ^ { - 1 } - n ^ { - 1 } } { m ^ { - 1 } + n ^ { - 1 } } \cdot \frac { m + n } { m - n }m−1+n−1m−1−n−1​⋅m−nm+n​

Perform the Indicated Operation and Write Your Answer with Positive $\frac { m ^ { - 1 } - n ^ { - 1 } } { m ^ { - 1 } + n ^ { - 1 } } \cdot \frac { m + n } { m - n }$