Упростить выражение: ( дробь р+3/6-2р + дробь 3-р/6+2р ) * дробь 2р^2-18/р^2+9

Решите задачу:

$(\frac{p+3}{6-2p}+\frac{3-p}{6+2p})*\frac{2p^2-18}{p^2+9}=-2$
$1.\\\frac{p+3}{-(2p-6)}+\frac{-(p-3)}{2p+6}=-\frac{p+3}{2(p-3)}-\frac{p-3}{2(p+3)}=-\frac{(p+3)(2(p+3))}{2(p-3)*2(p+3)}-\frac{(p-3)(2(p-3)}{2(p+3)*2(p-3)}=-\frac{2(p+3)^2}{4(p-3)*(p+3)}-\frac{2(p-3)^2}{4(p-3)*(p+3)}=\frac{-2(p+3)^2-2(p-3)^2}{4(p-3)(p+3)}=[tex]\frac{2(-(p+3)^2-(p-3)^2)}{4(p-3)(p+3)}=\frac{-((p+3)^2+(p-3)^2)}{2(p-3)(p+3)}=\frac{-((p+3)^2+(p-3)^2)}{2(p^2-9)}$
$2.\\\frac{2p^2-18}{p^2+9}=\frac{2(p^2-9)}{p^2+9}$
$3.\\.\frac{-((p+3)^2+(p-3)^2)}{2(p^2-9)}*\frac{2(p^2-9)}{p^2+9}=\frac{-((p+3)^2+(p-3)^2)(2(p^2-9))}{2(p^2-9)(p^2+9)}=\frac{-((p+3)^2+(p-3)^2)}{p^2+9}=\frac{-(p^2+6p+9+p^2-6p+9)}{p^2+9}=\frac{-(2p^2+18)}{p^2+9}=\frac{-2(p^2+9)}{p^2+9}=-2$