What are the factors of f(x)

Is the square root of 4 plus the square root of 16 rational?

Maria solved an equation as shown below. what is the solution to maria’s equation?

Why can't my rank go i have 1723 points, but my rank is only at ambitious, which is only 250 points! like, (p.s. i know this isn't related to math, but i just don't know why it's doing this and i would really appreciate if someone could tell me whats going on with this)