Question

write _____ as an imaginary number
√ -16
A.)4i
B.)4+i
C.)4i^2
D.)-4i

Answer 1

sqrt (-16) = sqrt(-1) * sqrt(16)

since sqrt(-1) is defined to be "i"
all you have to do is to simplify the rest.

Answer 2

so its D right?

Answer 3

sqrt(-1) = i
sqrt(16) =4

we have no negatives

Answer 4

ohh okay so is A?

Answer 5

Factor out the 4, and then you will get 4 * sqrt(-1), which is just i, so 4i

Answer 6

A