Question

Simplify. Enter your answer, in simplest radical form, in the box.

Answer 1

24.75 rounded might be 25

Answer 2

Note that -99 is not in the domain of the square root function, so there is no real answer here.

On the other hand, if the imaginary number i = √(-1) is known and understood in this context, then 4√(-99) = 4*i*√99  =  4*i*3*√11