Question $1(20$ points$)$

$$

The solution of the indefinite integral $18$x$2($x$3+2)5$ is:

Question $1$ options:

I $=6$x$2($x$3+2)6+$ c

I $=($x$3+2)5+$ C

I $=($x$3+2)6+$ C

I $=6($x$3+2)6+$ c