Question

solución de 2x² - 8 = 0
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Answer 1

x1 = 2

x2 = -2

Explicación paso a paso:

$2x {}^{2} - 8 = 0$

$2x {}^{2} = 8$

$x {}^{2} = \frac{8}{2}$

$x {}^{2} = 4$

$x = + - \sqrt{4}$

$x1 = 2$

$x2 = - 2$