Write the Expression with Only Positive Exponents and Evaluate If $$\frac { \frac { 1 } { a } + 1 } { \frac { 1 } { a } - 1 }$$

question 129

Multiple Choice

Write the expression with only positive exponents and evaluate if possible. Assume all variables represent nonzero real
numbers.
- $$\frac { \frac { 1 } { a } + 1 } { \frac { 1 } { a } - 1 }$$

• A) 1
• B) \(\frac { 1 + a } { 1 - a }\)
• C) \(\frac { a } { 1 - a ^ { 2 } }\)
• D) \(1 - a ^ { 2 }\)

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