Question

$x^{2}$-64=0

Answer 1

x² - 64 = 0
x² = 0 + 64
x² = 64
x = √64
x = +- 8

Answer 2

$x^2 - 64 = 0$

$x^2 = 64$

$x = \sqrt{64}$

$x = + 8 ~ou ~x = - 8$