[tex]
2x^2-6+5=0 \\
2x^2-1=0 \\
2x^2=1 \\
x^2=\frac{1}{2} \\
x=\pm\frac{1}{\sqrt{2}}
[/tex]
You may also want to rationalise the denominator, to do so multiply fraction by [tex]\sqrt{2}[/tex] to get [tex]x=\pm\frac{\sqrt{2}}{2}[/tex].
Hope this helps.
