Answer
1. 
2. 
3. 
4. 
5. 
Step-by-step-explanation
1. The given expression is 
Regroup the terms to obtain;

Simplify to get;

2. The given expression is 
Expand the brackets to get;

Regroup the terms to get;

Simplify

3. The given expression is 
Expand the brackets to get;

Simplify;

4. The given expression is 
Regroup the terms to get;

Apply the commutative property of multiplication to get;

Simplify;

5. The given expression is 
Expand the brackets to get;

Regroup the terms to get;

Simplify;
