X^2 + 6X + 9 - 15X + 5 = 0 X^2 - 9X + 14 = 0 D = 81 - 4*1*14 = 81 - 56 = 25 ; V D = 5 X1 = ( 9 + 5 ) : 2 = 7 X2 = 4 : 2 = 2 Ответ 2 и 7