Write the Expression with Only Positive Exponents and Evaluate If $$( - 2 ) ^ { - 1 }$$

Multiple Choice

Write the expression with only positive exponents and evaluate if possible. Assume all variables represent nonzero real
numbers.
- $$( - 2 ) ^ { - 1 }$$

A) $- \frac { 1 } { 2 }$
B) 2
C) $\frac { 1 } { 2 }$
D) $- 2$