k-i understand what complex numbers are but to solve this is not quite what i remember. Please show me a detail step on what to do. Thanks! Oh, in the book the answer given is ( -1 +/- iv3/2). One minus, plus / minus, sqrt of 3 divided by 2. Help me to see the correct answer. 2x2 = -2x -2 Solution 2x2 = -2x -2 x^2 = -x-1 x^2+x+1 = 0 solution is x = -1 + sqrt(1-4) /2 x = -1 - sqrt(1-4) /2 x = (-1 +3 i) /2 x = (-1 -3 i )/2 .