Respuesta :

Answer:

y=5

or

y=25/2

depending on what you meant by the question

Step-by-step explanation:

Do you mean 2y, or y^2? I'll solve both ways I guess

If you meant 2y:

2y-25=0

Add 25 to the other side

2y=25

divide both sides by two

y=25/2

if you meant y squared:

y^2-25=0

add 25 to the other side

y^2=25

take the square root of both sides

y=5