Question

Which of the following is equivalent to the square root of -80?

A: -4i sqrt 5
B: 16i sqrt 5
C: 4i sqrt 5
D: 2i sqrt 5

Answer 1

the answer to your problem is C 4i sqrt 5

Explanation:

Starting out with the square root of -80 you simplfy the radical by breaking the radicand (the number under the inclusion bar of the radical sign) up into the product of the known factors giving you your answer.