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.
... to
<math>x^2+\frac{b}{a}x=-\frac{c}{a}.</math>
The equation is now in a form in which we can conveniently complete the square[?]. To "complete the ...