Respuesta :

osikbro

Answer:

8,-8

Step-by-step explanation:

[tex]x^2+12=76\\x^2-64=0\\(x-8)(x+8)=0\\x=8,-8[/tex]

Hope this helps!

wegnerkolmp2741o

Answer:

x = ±8

Step-by-step explanation:

x^2+12=76

Subtract 12 from each side

x^2+12-12=76-12

x^2 = 64

Take the square root of each side

sqrt(x^2) =±sqrt(64)

x = ±8

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