Answer:
(x-1)(x-1)
Step-by-step explanation:
hello :
(x+2) ²-6 (x+ 2) +9 =(x+2) ²-2×(3) (x+ 2) +3²
by identity : (a-b)² = a²-2ab+b²
let : a=x+2 and b= 3
(x+2) ²-6 (x+ 2) +9 =(x+2) ²-2×(3) (x+ 2) +3²= ((x+2)-3)²= (x+2-3)² = (x-1)²=
