Which of the following is an example of a complex number that is not in the set of real numbers? -7
2 + StartRoot 3 EndRoot
4 + 9i
Pi

4 + 9i

Step-by-step explanation:

A complex number consists of a real part and an imaginary part, that is

z = x + yi ( x is the real part and yi the imaginary part )

A complex number does not exist in the set of real numbers.

2(2x + 3) = -4 + 2(2x + 5)

4x + 6 = -4 + 4x + 10

4x + 6 = 4x + 6

4x - 6 + 6 = 4x - 6 + 6

4x = 4x

x = x

unlimited solutions.