Synaesthesia is the neurological mixing of the senses. A synaesthete may for example hear[?]colours, see sounds, and taste tactile sensations. While this may happen in a person who has got autism, it is by no means exclusive to autistics.
... solutions x, both of which are complex numbers. The two solutions are complex conjugates of each other. (In this case, the parabola does not intersect the x-axis at ...