Question

х^-13х+22=0

помогите пожалуйста

Answer 1

x^2-13x+22=0
D = b^2-4ac = 169 - 4*22=169 - 88 = 81 = 9
x1 = (-b+D)/2a = (13 + 9)/2 = 23/2= 11.5
x2 = (-b-D)/2a = (13-9)/2 = 4/2 = 2

Answer 2

D = 169 - 4*1*22 = 81. Корень из 81 = 9
x1 = 13+9/2 = 11
x2 = 13-9/2 = 2
Ответ: 2; 11.