Show step and explanation.

1. Multiply . Give me your answer in radical form
(5-5i)-(3-6i)

2. Multiply. Give me your answer in radical form
[tex]\sqrt{3} \sqrt{5} \sqrt{17}[/tex]

3. Multiply. Give me your answer in radical form
[tex]\sqrt{3}( \sqrt{24} +\sqrt{30} )[/tex]