Answer:
a^2-22a+121 = (a-11) (a-11)
Step-by-step explanation:
Let's factor a2−22a+121
a2−22a+121
The middle number is -22 and the last number is 121.
Factoring means we want something like
(a+_)(a+_)
Which numbers go in the blanks?
We need two numbers that...
Add together to get -22
Multiply together to get 121
Can you think of the two numbers?
Try -11 and -11:
-11+-11 = -22
-11*-11 = 121
Fill in the blanks in
(a+_)(a+_)
with -11 and -11 to get...
(a-11)(a-11)
I hope it helps,
Correct me if I'm wrong
