**Answer:**

I think the answer would be 10.

Correct me if im wrong tho please.

**Step-by-step explanation:**

**Answer:**

not sure

**Step-by-step explanation:**

**Answer:**a = 7

b = 9

c = 4

**Explanation:**Kindly check the attached image for full explanation

Hope this helps :)

**Answer:**

4a(5a + 1)

**Step-by-step explanation:**

Given

20a² + 4a ← factor out 4a from each term

= 4a(5a + 1)

**Answer:**

11 hope this helps

**Step-by-step explanation:**