Найдите нули функции у=-12х^2+11x+1
Y = 0 ==> - 12x^2 + 11x + 1 = 0 / * (-1) 12x^2 - 11x - 1 = 0 D = 121 + 48 = 169 = 13^2 x1 = ( 11 + 13)/24 = 24/24 = 1; x2 = ( 11 - 13)/24 = - 2/24 = - 1/12; Ответ (1; 0) ; ( - 1/12; 0)