What will be the answer of 4x(x-1)+5=0 when i'll use quadratic formula to solve it.

Thank you ! ^___^

4 x^2 - 4 x + 5 = 0

x = [ 4 +/- sqrt (16 -80) ]/8

= 1/2 +/- (1/8)sqrt (-64)

= 1/2 +/- i