Respuesta :

Answer:

[tex]6\sqrt{10}[/tex]

Step-by-step explanation:

[tex]-3i\sqrt{-40} \\= -3i\sqrt{(-1)(5)(8)} \\= -3i\sqrt{-1} \sqrt{(5)(2^{3})} \\= -3i(i)(2)\sqrt{(5)(2)} \\= 6\sqrt{10}[/tex]