Answer:
(B)The GCF of the numbers(28 and 36) in each term in the expression is 4.
(C)The GCF of the variables(a and ab) in each term in the expression is a.
(E)The factored form of the expression is 4a(7+9b)
Explanation:
Given the expression:
![28a+36ab](https://img.qammunity.org/2021/formulas/mathematics/high-school/mrmeqqx8wtxpq6m2z4fva0kluhk5m3nq1n.png)
If we write it as a product, we obtain:
![28a+36ab=4a(7+9b)](https://img.qammunity.org/2021/formulas/mathematics/high-school/69w68gtfoc91ymp4tss03hkk1wum6u9a99.png)
We can see the following
- The GCF of the numbers(28 and 36) in each term in the expression is 4.
- The GCF of the variables(a and ab) in each term in the expression is a.
- The factored form of the expression is 4a(7+9b)
The correct options are B, C, and E.