Question

solve for :)
:)^2+2:)+1=0

Answer 1

Math error! ^.^

Answer 2

(:) + 1)^2 = 000000000000
:) = -111 +110

Answer 3

Setting :) = x,
Note: (+-) means plus or minus
x=[-b(+-)sqrt(b^2-4ac)]/2a = [-2(+-)sqrt(4-4*4)]/4 = -2(+-)2i*sqrt(3)/4 = [1(+-)i*sqrt3)]/2

So x = 1/2 + i*sqrt(3)/2, or x = 1/2 - i*sqrt(3)/2. Since x = :), :) has the same values.