Question

Which of the following is not a real number?

Answer 1

Answer:

B

Step-by-step explanation:

if you put it in the calculator it says error. I was taught to only use positive numbers. for example √4

Answer 2

Answer:

$\sqrt{ - 4}$

Step-by-step explanation:

Non real number are neither irrational numbers(

$\sqrt{3}$

and rational numbers (-2 or 1/2)