Simplify -√-9??

2 Answers
Apr 18, 2018

#-3i#

Explanation:

#-sqrt(-9)# #= - i sqrt9 #
#- i sqrt9 # =#-3i#

Apr 18, 2018

#-3i#

Explanation:

Everytime you have a negative sign in the root, that means the solution is imaginary.

As you can see, the number inside the square root is #-9#, so the solution is imaginary.

#i#, or imaginary, equals to #sqrt(-1)#, so we can take that out of the root:
#-sqrt(9)*sqrt(-1)#

#-3*i#

So the simplification of #-sqrt(-9)# is:
#-3i#

Hope this helps!