I need to find all the solutions of the equation
I know that I can use the quadratic equation and then use a partial result of that to solve for the roots. However, when I use the quadratic equation, I come up with an answer that just doesn't make sense to me, i.e. . I am not sure where to go from here. I have gone over my calculations several times and this is just what I get... I will appreciate your help. (Sorry, I can't remember how to do the plus/minus sign). Thanks.