16. Given that the function $f(x)$ is monotonically increasing on $[2,+\infty)$, and for any real number $x$ it always holds that $f(2+x)=f(2-x)$, if $f\left(1-2 x^{2}\right)<f\left(1+2 x-x^{2}\right)$, then the range of values for $x$ is