# Question #6d036

##### 1 Answer

May 30, 2016

a)

#### Explanation:

Expanding is the opposite of factoring. When you have a number in front of parentheses, it means that number (called factor) is multiplying each number inside the parentheses. Therefore, for letter a, we have:

Solving these multiplications, the output is:

The next part is simplifying the operation. We can sum and subtract like thers, that is, sum numbers without letters with other numbers without letters, and numbers with x with other numbers with x. I have rewritten the order to make the visualization easier:

Now try doing the next exercises and watch out for the signs. The calculation for