Simplify.
5i−54−−−−√
5i √ [ -54 ] =
5i √-1 *√ 9 * √ 6 =
5i (i) * 3 * √ 6 =
5 i^2 * 3 * √ 6 =
5 * (-1) * 3 * √6 =
-15 √6