X(x-2)=12-x решите уравнение

Question

X(x-2)=12-x решите уравнение

Answer 1

X^2-2x+x-12=0
x^2-x-12=0
d=1^2+4*12
x1=(-b+d^(1/2))/2a=(1+7)/2=4
x2=(-b-d^(1/2))/2a=(1-7)/2=-3

Answer 2

x(x-2)=12-x 
х^2 - 2x - 12 + x = 0
x^2 - x - 12 = 0
D = 49
х1 = 10/2 = 5
x2 = -8/2 = -4
Ответ: х1 = 5, х2 = -4