Question

resuelve
$5x {}^{2} + 5 = 25$
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Answer 1

Respuesta:

${5x}^{2} + 5 = 25$

$5( {x}^{2} + 1) = 25$

${x}^{2} + 1 = \frac{25}{5}$

${x}^{2} = 5 - 1$

$x = \sqrt{4} = 2$