Rainis[?] (real name: Janis Pliek*ans, 1865-1929), the most distinguished Latvian writer of all time who is the author of a number of poetry collections. Rainis is also acknowledged as the "Man of the 20th Century of Latvia".
... is equivalent 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[?]. ...