Answer:
(x-3)²
Step-by-step explanation:
x²-6x+9
x² can be written as (x)²
9 can be written as 3²
(x)²-6x +(3)
we can break 6x as 2(3)(x)
by using square formula
(a+b)²= a²-2ab+b²
Putting all the values back in expression we get
(x)²-2(3)(x)+(3)²
by closing formula we get
(x-3)²
