Question

Simplify the number using the imaginary unit i square root of -28

Answer 1

`N=2 √(7) i`

Explanation:

Imaginary or complex numbers

The complex numbers are identified from real numbers because they have an imaginary part, the unit
`i=√(-1)`

Our number is

`N=√(-28)`

which can be expressed as

`N=√((-1)(4)(7))`

`N=√(-1) √(4) √(7)`

`N=i (2) √(7)`

`N=2 √(7) i`