Question

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

Answer 1

It's x^4+2x^2+2

Explanation:

The argument of f(f(x)) function becomes x^2+1-> F=(x^2+1)^2+1 Opening the brackets you get my answer. Not sure if O sign stood for ^4.