Question

$\sqrt{2 {x}^{2} } - 9 = 0$
alguien que me ayude!!​

Answer 1

Respuesta:

$\sqrt{2 {x}^{2} } - 9 = 0$

$\sqrt{2 {x}^{2} } = 9$

$(\sqrt{2 {x}^{2} }) {}^{2} = {9}^{2}$

$2 {x}^{2} = 81$

${x}^{2} = \frac{81}{2}$

${x}^{2} = 40.5$

$\sqrt{ {x}^{2} } = \sqrt{40.5}$

$x = \sqrt{40.5}$

$x = 6.363$