Simplify.
-$\frac { \frac { 10 } { a } + 10 } { \frac { 10 } { a } - 10 }$
A) $10 - a ^ { 2 }$
B) $\frac { 1 + a } { 1 - a }$
C) $\frac { 10 ( 1 + a ) } { 1 - a }$
D) $\frac { a ^ { 2 } } { 10 - a ^ { 2 } }$

Question

Quizplus · Accepted Answer

To simplify the given expression, factor out 10 in both the numerator and the denominator: $\frac{10/a + 10}{10/a - 10} = \frac{10(1/a + 1)}{10(1/a - 1)}$. Simplifying further, we get $\frac{1 + a}{1 - a}$, which matches choice B.

Simplify - 10a+1010a−10\frac { \frac { 10 } { a } + 10 } { \frac { 10 } { a } - 10 }a10​−10a10​+10​

Simplify
- $\frac { \frac { 10 } { a } + 10 } { \frac { 10 } { a } - 10 }$