How do i solve this?

solve y′=(y−5)(y+5) if y(2)=0?

i used methods of separation and did a partial fraction integral and ended up with

(ln(y+5)-ln(y-5))/10 = x

i'm not sure if i did this correctly nor do i know how to solve for y at this point. send ! you.

Answer asap and if you do you will get brainliest. catherine buys a gallon of ice cream from the store. after taking it home, she eats a fifth of a gallon of ice cream. her sister eats some of the ice cream as well. if two-thirds of the original amount of ice cream is left, then what fraction of a gallon of ice cream did her sister eat?