Let A=\ x x^3+x^2-p x+q=0, p, q, ∈ R\ and B=\ x x^2-q x+2=0, q ∈ R\...

Let $A=\left\{x \mid x^3+x^2-p x+q=0, p, q, \in R\right\} and$B=\left\{x \mid x^2-q x+2=0, q \in R\right\}$be the sets. If$n(A \cap B)=2$and$x_0 \in(A-B)$, then find the value of \left|p-q+x_0\right|$. [Note: $n(P \cap Q)$ denotes number of common elements in set $P$ and set $Q$ and $a \in(P-Q)$ denotes elements ' $a$ ' lies in set $P$ not in set $Q$.]