Given f(x)=2x+1f(x) = 2x + 1f(x)=2x+1 and g(x)=x2g(x) = x^2g(x)=x2, what is the expression for g(f(x))g(f(x))g(f(x))?
2x2+12x^2 + 12x2+1
4x2+14x^2 + 14x2+1
4x2+4x+14x^2 + 4x + 14x2+4x+1
2x2+2x2x^2 + 2x2x2+2x