On August 10, a festival took place in her honor. On December 9, the Opalia[?] was celebrated. On August 25, the Opiconsivia[?] was held.
Alternative: Opis
... formula is derived by the method of completing the square[?]. <math>ax^2+bx+c=0</math> Dividing our quadratic equation by a, we have <math> x^2 ...