Respuesta :

fortressinthesky

Answer:

x^2+2=0 or x^2−6=0

Step-by-step explanation:

x^4-4x^2-12=0

(x^2+2)(x^2−6)

x^2+2=0 or x^2−6=0

gloria7711

Answer:

x=6

Step-by-step explanation:

Hope It Help!

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