Answer:

Step-by-step explanation:
The given expression is

Recall and use the following property to factor the numerator;


This will give us;

Simplify;

21/10+5/10
Add nominators since denominators are the same.
26/10
Or 2 6/10 as a mixed number.
The answer is 168!!!!!!!!!!!!!!!!!!!
Answer:
2nd option
Step-by-step explanation:
Simplify first what is in the parenthesis before distributing the exponent outside would help.
Remember that negative exponents simply means that their on the wrong side of the fraction. So if you find a variable with a negative exponent as a numerator, you bring them down and when it is found as a denominator, you bring them up.
Also when you distribute your exponents, you always multiply it to each exponent inside the parenthesis.
Look at the attached picture for the solution