Respuesta :

Step-by-step explanation:

1. x² + 4 = (x+2)²

: x² + 4 = x² + 4 (Yes)

2. (2x+6)²= 4(x+3)²

: 4x²+36 = 4x² + 36 ( Yes)

3. (x-3)(x-3)= (x-9)² (NO)

beacause , True statement is

(x+3)(x-3)= (x-9)²

4. x²-10x+25 = (x-5)(x+5) (No)

: x²-2x+y² = (a-b)(a+b)

Therefore, its not true statement!