Answer:
The middle number is 14 and the last number is 49.
Factoring means we want something like
(x+_)(x+_)
Which numbers go in the blanks?
We need two numbers that...
Add together to get 14
Multiply together to get 49
Can you think of the two numbers?
Try 7 and 7:
7+7 = 14
7*7 = 49
Fill in the blanks in
(x+_)(x+_)
with 7 and 7 to get...
(x+7)(x+7)
Answer:
(x+7)(x+7)