Question

Calcule as raízes de:
x².64=0

Answer 1

Olá,

$x^2-64=0$

$x^2=64 \\ x= \sqrt{64} \\ \boxed{x=\pm8}$

Answer 2

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se for:

x² - 64 = 0
x² = 64
x = √64
x = +/- 8