Respuesta :

CHERLYNnotCHERRY

Answer:

The answer is 4th point

Step-by-step explanation:

x² should not equals to a negative number :

e.g

x² = 4

x = √4

= 2

x² = -4

x = √-4 (undefined)(rejected)

lynelslayer1

Answer:

point 4

Step-by-step explanation:

quick maths

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