Each expression is made up of terms. These terms are separated by addition or subtraction. In the given expression, the terms of the expression are: 5, 6a and 11b
Now, a factor is a part of a product.
For the given expression, we have two terms containing products, these terms are 6a and 11b. Based on the definition of factor, factors of the given expression are: 6, a, 11 and b