4. The following are the values of a, b, and c that Rena and Divina got when they expressed (2x - 1)² = (x + 1)² in standard form. (Rena: a = 3, b = -6, c = 0; Divina: a = 3, b = 6, c = 0). Who do you think got the correct values of a, b, and c? ​