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