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

question 365

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

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Definitions:

Peripheral Nervous System

The part of the nervous system that lies outside the central nervous system, consisting of nerves and ganglia, and connects the CNS to limbs and organs.

Central Nervous System

The part of the nervous system consisting of the brain and spinal cord, responsible for processing and sending out neural signals.

Autonomic Nervous System

Part of the peripheral nervous system that controls involuntary bodily functions such as heart rate, digestion, and respiratory rate.

Motor Nerves

Nerves that transmit impulses from the central nervous system to muscles, causing them to contract and enable movement.