Question 1172829
.
<pre>

    2x^2 + 4 = 396


    2x^2     = 396 - 4 = 392

     
     x^2               = 392/2 = 196


     x                         = {{{sqrt(196)}}} = +/- 14.


<U>ANSWER</U>.  There are two solutions  x= 14  and  x= -14.
</pre>

Solved.