Question

Can you please explain how to do this and give me the answer so next time I know how to do it. Square root with -15 in it and square root with -4 in it Simplify using i

Answer 1

Answer:

15i and 4i

Step-by-step explanation:

i is an imaginary number also shown as$\sqrt{-1}$ .  

Since we have $\sqrt{-15}$, thats 15*$\sqrt{-1}$ .  Substitute $\sqrt{-1}$ for i and we get 15*i or 15i.

We do the same for $\sqrt{-4}$.  This is 4*$\sqrt{-1}$ or 4*i or 4i.

An easy way to do this is to take the negative inside the square root like $\sqrt{-6}$ , take the absolute value -6 absolute value=6 and times it by i.  So now it becomes 6i