F(x) = x2 + 1
What is f(f(x))?
o x4 + 2x2 + 1
O x + 2x²+2
O x+2
o A + 1

The question is kind of confusing. if it's asking how many variations of answers can you give. then do 4^5 for your answer.this would be something like the first question could be a and the 2nd c or first b next c etc. if you can, ask the teacher for a better confirmation of what it's asking. if i'm assuming correctly what it's asking, it's 625 different variations.