Answer:
[tex]a=2 \quad \text{and} \quad b=-2[/tex]
Step-by-step explanation:
Take [tex]a=2 \quad \text{and} \quad b=-2[/tex], note that
[tex]2=(-1)\cdot(-2)[/tex]
hence b divides a. On the other hand, we have that
[tex]-2=(-1)\cdot2[/tex]
which tells us that a divides b. Moreover, [tex]a=2 \neq -2=b[/tex].
