Respuesta :

choixongdong

Answer:

x = 2√5 and x = - 2√5

Step-by-step explanation:

x^2 = 20

x = 2√5 and x = - 2√5

S1NGH

Answer:

-2√5 or 2√5 / 4.472135955 or -4.472135955

Step-by-step explanation:

Square root x² and 20 which leaves you with x and 2√5 or 4.472135955