Question

Z²-z-3=0дискриминант​

Answer 1

$\tt\displaystyle z^2-z-3=0\\D=(-1)^2-4*1*(-3)=1+12=13$

Answer 2

Ответ:

D=13

z1,2=(1±√13)/2

Объяснение:

объяснение смотри на прикрепленном изображении

Answer 3

To find the discriminant for the quadratic equation Z² - Z - 3 = 0, we can use the formula:

Discriminant (Δ) = b² - 4ac

In this case, the equation is in the form of az² + bz + c = 0, where: a = 1 (coefficient of z²) b = -1 (coefficient of z) c = -3

Plugging in the values, we have:

Δ = (-1)² - 4(1)(-3) = 1 + 12 = 13

Therefore, the discriminant for the equation Z² - Z - 3 = 0 is 13.