CAT 2022 Slot 2 QA · Question 10

Suppose for all integers $x$, there are two functions $f$ and $g$ such that $f(x)+f(x-1)-1=0$ and $g(x)=x^2$. If $f\left(x^2-x\right)=5$, then the value of the sum $f(g(5))+g(f(5))$ is