х ² - 12х - 14 = 0
D = 12² - 4*1*(-14) = 144 + 56 = √200 = 10√2
x1=
x2=
x1= 6+5√2
x2= 6-5√2
сумма корней = 12
х ² - 12х - 14 = 0
D = 12² - 4*1*(-14) = 144 + 56 = √200 = 10√2
x1=
x2=
x1= 6+5√2
x2= 6-5√2
сумма корней = 12