Answer:
15i and 4i
Step-by-step explanation:
i is an imaginary number also shown as[tex]\sqrt{-1}[/tex] .
Since we have [tex]\sqrt{-15}[/tex], thats 15*[tex]\sqrt{-1}[/tex] . Substitute [tex]\sqrt{-1}[/tex] for i and we get 15*i or 15i.
We do the same for [tex]\sqrt{-4}[/tex]. This is 4*[tex]\sqrt{-1}[/tex] or 4*i or 4i.
An easy way to do this is to take the negative inside the square root like [tex]\sqrt{-6}[/tex] , take the absolute value -6 absolute value=6 and times it by i. So now it becomes 6i
