(х-6)^2=-24х помогите

Question

(х-6)^2=-24х помогите

Answer 1

(x-6)^2=-24x
(x-6)(x-6)=-24x
x^2-6x-6x+36=-24x
x^2-12x+36=-24x
x^2+12x+36=0
D=144-1*4*36=0
D = 0
x = -12/2
x = -6