Question:
Suppose $f(x)$ is a polynomial of degree four, having critical points at $-1,0,1$. If $T=\{x \in \mathbf{R} \mid f(x)=f(0)\}$, then the sum of squares of all the elements of $T$ is :
Correct Option: 1
Solution:
$\because$ The critical points are $-1,0,1$