Answer:
The simplified form is: 
Step-by-step explanation:
To simplify the expression given we, need to open the brackets, and if there is power term. Then we need to group all the like terms and then arrange in the descending order of powers of the given expression.
Now the expression that is given to us is:

Here we will simplify it by grouping the like terms, as follows:

So this is the required simplified form.
Answer is A. first one...
P = -3
G = 3
P = -G = -(3) = -3
Well the question says "rewrite each statement using symbols so I guess it means using symbols...
The first option is correct. See an explanation below.