Respuesta :

salatulmaghrib
x^4-81 =
(x^2-9)(x^2+9) =
(x+3)(x-3)(x^2+9)

There are two real roots (at x=3,-3).
hbrewer72

Answer:

Find roots of x4−81=0 by solving for x. x=3,−3

Step-by-step explanation:

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