9. The solution to the equation $\frac{1}{x^{2}+x-2}+\frac{1}{x^{2}+7 x+10}=2$ is
9. $-2 \pm \sqrt{10}$.

The original equation is transformed into
$$
\frac{1}{(x+2)(x-1)}+\frac{1}{(x+2)(x+5)}=2,
$$

which simplifies to $x^{2}+4 x-6=0$, solving for $x$ yields $x=-2 \pm \sqrt{10}$.
Upon verification, the two roots of the original equation are $x=-2 \pm \sqrt{10}$.