Respuesta :

wegnerkolmp2741o

Answer:

x=±2

Step-by-step explanation:

x^2-4=0​

Add 4 to each side

x^2-4+4=0​+4

x^2 = 4

Take the square root of each side

sqrt(x^2) = sqrt(4)

x=±2

Answer:

2 and -2

Step-by-step explanation:

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