Answer:
-1 + sqrt(3)/2 or -1 - sqrt(3)/2
Explanation:
First we rewrite the equation in the form of ax^2 + bx + c = 0.
Add 1 to both sides. 4u^2 + 8u + 1 = 0. Then we apply the quadratic formula -b plus minus root b^2 - 4ac all over 2a. Plug the values for a b and c in, and you should get your two possible answers - either -1 + sqrt(3)/2 or -1 - sqrt(3)/2.