To understand means to simplify. (RussianПонять - значит упростить) [From Strugatsky's SFnovelВолны гасят ветер (Waves blow out the wind, translated to English as The Time Wanderers)]
... of the coefficients a, b and c, which are assumed to be real (but see below for generalizations) with a being non-zero. These solutions are also called the roots of th ...