Answer:
15i[tex]\sqrt{2}[/tex]
Step-by-step explanation:
Require to know [tex]\sqrt{-1}[/tex] = i
Given
5[tex]\sqrt{-18}[/tex]
= 5[tex]\sqrt{9(2)(-1)}[/tex]
= 5 × [tex]\sqrt{9}[/tex] × [tex]\sqrt{2}[/tex] × [tex]\sqrt{-1}[/tex]
= 5 × 3 × [tex]\sqrt{2}[/tex] × i
= 15i[tex]\sqrt{2}[/tex]
