Which expressions represent purely real numbers and which expressions represent non-real complex numbers? — sqrt[(-18)^2]
— 4-32i^2
— 3+2i
— 2- sqrt[-49]
— i^9
— -289

Step-by-step explanation:

Complex numbers are the numbers represented by the expression = a + bi

Here a = real part of the number

bi = imaginary part

a and b are the real numbers.

    [Since, ]

Therefore, its a non real complex number.

2 - =

               =

               =

This number is a Non real complex number.

              = 18i

It's a non real complex number.

3 + 2i

It's a non real complex number.

-289

It's a purely real number.

             = 4 + 32

             = 36

It's a purely real number.