Respuesta :

caylus

Answer:

Step-by-step explanation:

1) y=x²-8x+5=0

2) x²-8x=-5

3) x²-8x+16=9

4) (x-4)²=9

5)(x-4)²-9=0

((x-4)-3)((x-4+3)=0

(x-7)(x-1)=0

x=7 or x=1

sol={1;7}