Question

2x² + 7 = 16 alguien q sepa resolverlooo ​

Answer 1

Respuesta:

2x² + 7 = 16

2x² = 16 -7

2x² = 9

$x^{2} =\frac{9}{2} \\\\\sqrt{x^{2} }=\sqrt{\frac{9}{2} }\\\\x = \frac{\sqrt{9} }{\sqrt{2} }\\\\x = \frac{3 }{\sqrt{2} }\\\\x= \frac{3\sqrt{2}}{\sqrt{2}\sqrt{2}}\\\\x= \frac{3\sqrt{2}}{(\sqrt{2})^{2} }}\\\\x= + \frac{3\sqrt{2}}{2} , - \frac{3\sqrt{2}}{2}$