(t^-9t)^+22(t^-9t)+112=0 используя метод введения новой переменной

t^2 - 9t = z z^2 + 22z + 112 = 0  D = 36 z1 = ( - 22 + 6)/2 = - 16/2 = - 8 z2 = ( - 22 - 6)/2 = - 28/2 = - 14 1) t^2 - 9t = - 8 2) t^2 - 9t = - 14 (1) t^2 - 9t + 8 = 0  D = 49 = 7^2 t1 = ( 9 + 7)/2 = 8 t2 = 1 (2) t^2 - 9t + 14 = 0  D = 25 t3 = ( 9 + 5)/2 = 7 t4 = 2 Ответ 1; 2; 7; 8