Question

Which of the following shows /-25 simplified and written as a complex number

Answer 1

0 + 5i

Explanation:

A complex number is of the form

a + bi

√(-25) = √[(-1)(25)] = i × 5 = 5i

To write 5i as a complex number, the real part is 0, so a = 0, so you get

0 + 5i